21105420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1621}}^1$

素因数の和:1671

約数の個数: 96

約数和(自身を含む): 69758976

約数和(自身を除く): 48653556

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 60, 62, 70, 84, 93, 105, 124, 140, 155, 186, 210, 217, 310, 372, 420, 434, 465, 620, 651, 868, 930, 1085, 1302, 1621, 1860, 2170, 2604, 3242, 3255, 4340, 4863, 6484, 6510, 8105, 9726, 11347, 13020, 16210, 19452, 22694, 24315, 32420, 34041, 45388, 48630, 50251, 56735, 68082, 97260, 100502, 113470, 136164, 150753, 170205, 201004, 226940, 251255, 301506, 340410, 351757, 502510, 603012, 680820, 703514, 753765, 1005020, 1055271, 1407028, 1507530, 1758785, 2110542, 3015060, 3517570, 4221084, 5276355, 7035140, 10552710, 21105420]

約数ペア:

[(1, 21105420), (2, 10552710), (3, 7035140), (4, 5276355), (5, 4221084), (6, 3517570), (7, 3015060), (10, 2110542), (12, 1758785), (14, 1507530), (15, 1407028), (20, 1055271), (21, 1005020), (28, 753765), (30, 703514), (31, 680820), (35, 603012), (42, 502510), (60, 351757), (62, 340410), (70, 301506), (84, 251255), (93, 226940), (105, 201004), (124, 170205), (140, 150753), (155, 136164), (186, 113470), (210, 100502), (217, 97260), (310, 68082), (372, 56735), (420, 50251), (434, 48630), (465, 45388), (620, 34041), (651, 32420), (868, 24315), (930, 22694), (1085, 19452), (1302, 16210), (1621, 13020), (1860, 11347), (2170, 9726), (2604, 8105), (3242, 6510), (3255, 6484), (4340, 4863)]