20671560

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{631}}^1$

素因数の和:668

約数の個数: 192

約数和(自身を含む): 82817280

約数和(自身を除く): 62145720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 18, 20, 21, 24, 26, 28, 30, 35, 36, 39, 40, 42, 45, 52, 56, 60, 63, 65, 70, 72, 78, 84, 90, 91, 104, 105, 117, 120, 126, 130, 140, 156, 168, 180, 182, 195, 210, 234, 252, 260, 273, 280, 312, 315, 360, 364, 390, 420, 455, 468, 504, 520, 546, 585, 630, 631, 728, 780, 819, 840, 910, 936, 1092, 1170, 1260, 1262, 1365, 1560, 1638, 1820, 1893, 2184, 2340, 2520, 2524, 2730, 3155, 3276, 3640, 3786, 4095, 4417, 4680, 5048, 5460, 5679, 6310, 6552, 7572, 8190, 8203, 8834, 9465, 10920, 11358, 12620, 13251, 15144, 16380, 16406, 17668, 18930, 22085, 22716, 24609, 25240, 26502, 28395, 32760, 32812, 35336, 37860, 39753, 41015, 44170, 45432, 49218, 53004, 56790, 57421, 65624, 66255, 73827, 75720, 79506, 82030, 88340, 98436, 106008, 113580, 114842, 123045, 132510, 147654, 159012, 164060, 172263, 176680, 196872, 198765, 227160, 229684, 246090, 265020, 287105, 295308, 318024, 328120, 344526, 369135, 397530, 459368, 492180, 516789, 530040, 574210, 590616, 689052, 738270, 795060, 861315, 984360, 1033578, 1148420, 1378104, 1476540, 1590120, 1722630, 2067156, 2296840, 2583945, 2953080, 3445260, 4134312, 5167890, 6890520, 10335780, 20671560]

約数ペア:

[(1, 20671560), (2, 10335780), (3, 6890520), (4, 5167890), (5, 4134312), (6, 3445260), (7, 2953080), (8, 2583945), (9, 2296840), (10, 2067156), (12, 1722630), (13, 1590120), (14, 1476540), (15, 1378104), (18, 1148420), (20, 1033578), (21, 984360), (24, 861315), (26, 795060), (28, 738270), (30, 689052), (35, 590616), (36, 574210), (39, 530040), (40, 516789), (42, 492180), (45, 459368), (52, 397530), (56, 369135), (60, 344526), (63, 328120), (65, 318024), (70, 295308), (72, 287105), (78, 265020), (84, 246090), (90, 229684), (91, 227160), (104, 198765), (105, 196872), (117, 176680), (120, 172263), (126, 164060), (130, 159012), (140, 147654), (156, 132510), (168, 123045), (180, 114842), (182, 113580), (195, 106008), (210, 98436), (234, 88340), (252, 82030), (260, 79506), (273, 75720), (280, 73827), (312, 66255), (315, 65624), (360, 57421), (364, 56790), (390, 53004), (420, 49218), (455, 45432), (468, 44170), (504, 41015), (520, 39753), (546, 37860), (585, 35336), (630, 32812), (631, 32760), (728, 28395), (780, 26502), (819, 25240), (840, 24609), (910, 22716), (936, 22085), (1092, 18930), (1170, 17668), (1260, 16406), (1262, 16380), (1365, 15144), (1560, 13251), (1638, 12620), (1820, 11358), (1893, 10920), (2184, 9465), (2340, 8834), (2520, 8203), (2524, 8190), (2730, 7572), (3155, 6552), (3276, 6310), (3640, 5679), (3786, 5460), (4095, 5048), (4417, 4680)]