20745900

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:153

約数の個数: 216

約数和(自身を含む): 77182560

約数和(自身を除く): 56436660

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 37, 42, 45, 50, 60, 63, 70, 74, 75, 84, 89, 90, 100, 105, 111, 126, 140, 148, 150, 175, 178, 180, 185, 210, 222, 225, 252, 259, 267, 300, 315, 333, 350, 356, 370, 420, 444, 445, 450, 518, 525, 534, 555, 623, 630, 666, 700, 740, 777, 801, 890, 900, 925, 1036, 1050, 1068, 1110, 1246, 1260, 1295, 1332, 1335, 1554, 1575, 1602, 1665, 1780, 1850, 1869, 2100, 2220, 2225, 2331, 2492, 2590, 2670, 2775, 3108, 3115, 3150, 3204, 3293, 3330, 3700, 3738, 3885, 4005, 4450, 4662, 5180, 5340, 5550, 5607, 6230, 6300, 6475, 6586, 6660, 6675, 7476, 7770, 8010, 8325, 8900, 9324, 9345, 9879, 11100, 11214, 11655, 12460, 12950, 13172, 13350, 15540, 15575, 16020, 16465, 16650, 18690, 19425, 19758, 20025, 22428, 23051, 23310, 25900, 26700, 28035, 29637, 31150, 32930, 33300, 37380, 38850, 39516, 40050, 46102, 46620, 46725, 49395, 56070, 58275, 59274, 62300, 65860, 69153, 77700, 80100, 82325, 92204, 93450, 98790, 112140, 115255, 116550, 118548, 138306, 140175, 148185, 164650, 186900, 197580, 207459, 230510, 233100, 246975, 276612, 280350, 296370, 329300, 345765, 414918, 461020, 493950, 560700, 576275, 592740, 691530, 740925, 829836, 987900, 1037295, 1152550, 1383060, 1481850, 1728825, 2074590, 2305100, 2963700, 3457650, 4149180, 5186475, 6915300, 10372950, 20745900]

約数ペア:

[(1, 20745900), (2, 10372950), (3, 6915300), (4, 5186475), (5, 4149180), (6, 3457650), (7, 2963700), (9, 2305100), (10, 2074590), (12, 1728825), (14, 1481850), (15, 1383060), (18, 1152550), (20, 1037295), (21, 987900), (25, 829836), (28, 740925), (30, 691530), (35, 592740), (36, 576275), (37, 560700), (42, 493950), (45, 461020), (50, 414918), (60, 345765), (63, 329300), (70, 296370), (74, 280350), (75, 276612), (84, 246975), (89, 233100), (90, 230510), (100, 207459), (105, 197580), (111, 186900), (126, 164650), (140, 148185), (148, 140175), (150, 138306), (175, 118548), (178, 116550), (180, 115255), (185, 112140), (210, 98790), (222, 93450), (225, 92204), (252, 82325), (259, 80100), (267, 77700), (300, 69153), (315, 65860), (333, 62300), (350, 59274), (356, 58275), (370, 56070), (420, 49395), (444, 46725), (445, 46620), (450, 46102), (518, 40050), (525, 39516), (534, 38850), (555, 37380), (623, 33300), (630, 32930), (666, 31150), (700, 29637), (740, 28035), (777, 26700), (801, 25900), (890, 23310), (900, 23051), (925, 22428), (1036, 20025), (1050, 19758), (1068, 19425), (1110, 18690), (1246, 16650), (1260, 16465), (1295, 16020), (1332, 15575), (1335, 15540), (1554, 13350), (1575, 13172), (1602, 12950), (1665, 12460), (1780, 11655), (1850, 11214), (1869, 11100), (2100, 9879), (2220, 9345), (2225, 9324), (2331, 8900), (2492, 8325), (2590, 8010), (2670, 7770), (2775, 7476), (3108, 6675), (3115, 6660), (3150, 6586), (3204, 6475), (3293, 6300), (3330, 6230), (3700, 5607), (3738, 5550), (3885, 5340), (4005, 5180), (4450, 4662)]