21095550

素因数分解:

$2^1\times 3^2\times 5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:243

約数の個数: 144

約数和(自身を含む): 66891552

約数和(自身を除く): 45796002

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 30, 35, 37, 42, 45, 50, 63, 70, 74, 75, 90, 105, 111, 126, 150, 175, 181, 185, 210, 222, 225, 259, 315, 333, 350, 362, 370, 450, 518, 525, 543, 555, 630, 666, 777, 905, 925, 1050, 1086, 1110, 1267, 1295, 1554, 1575, 1629, 1665, 1810, 1850, 2331, 2534, 2590, 2715, 2775, 3150, 3258, 3330, 3801, 3885, 4525, 4662, 5430, 5550, 6335, 6475, 6697, 7602, 7770, 8145, 8325, 9050, 11403, 11655, 12670, 12950, 13394, 13575, 16290, 16650, 19005, 19425, 20091, 22806, 23310, 27150, 31675, 33485, 38010, 38850, 40182, 40725, 46879, 57015, 58275, 60273, 63350, 66970, 81450, 93758, 95025, 100455, 114030, 116550, 120546, 140637, 167425, 190050, 200910, 234395, 281274, 285075, 301365, 334850, 421911, 468790, 502275, 570150, 602730, 703185, 843822, 1004550, 1171975, 1406370, 1506825, 2109555, 2343950, 3013650, 3515925, 4219110, 7031850, 10547775, 21095550]

約数ペア:

[(1, 21095550), (2, 10547775), (3, 7031850), (5, 4219110), (6, 3515925), (7, 3013650), (9, 2343950), (10, 2109555), (14, 1506825), (15, 1406370), (18, 1171975), (21, 1004550), (25, 843822), (30, 703185), (35, 602730), (37, 570150), (42, 502275), (45, 468790), (50, 421911), (63, 334850), (70, 301365), (74, 285075), (75, 281274), (90, 234395), (105, 200910), (111, 190050), (126, 167425), (150, 140637), (175, 120546), (181, 116550), (185, 114030), (210, 100455), (222, 95025), (225, 93758), (259, 81450), (315, 66970), (333, 63350), (350, 60273), (362, 58275), (370, 57015), (450, 46879), (518, 40725), (525, 40182), (543, 38850), (555, 38010), (630, 33485), (666, 31675), (777, 27150), (905, 23310), (925, 22806), (1050, 20091), (1086, 19425), (1110, 19005), (1267, 16650), (1295, 16290), (1554, 13575), (1575, 13394), (1629, 12950), (1665, 12670), (1810, 11655), (1850, 11403), (2331, 9050), (2534, 8325), (2590, 8145), (2715, 7770), (2775, 7602), (3150, 6697), (3258, 6475), (3330, 6335), (3801, 5550), (3885, 5430), (4525, 4662)]