21500670

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{379}}^1$

素因数の和:481

約数の個数: 64

約数和(自身を含む): 54282240

約数和(自身を除く): 32781570

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 61, 62, 93, 122, 155, 183, 186, 305, 310, 366, 379, 465, 610, 758, 915, 930, 1137, 1830, 1891, 1895, 2274, 3782, 3790, 5673, 5685, 9455, 11346, 11370, 11749, 18910, 23119, 23498, 28365, 35247, 46238, 56730, 58745, 69357, 70494, 115595, 117490, 138714, 176235, 231190, 346785, 352470, 693570, 716689, 1433378, 2150067, 3583445, 4300134, 7166890, 10750335, 21500670]

約数ペア:

[(1, 21500670), (2, 10750335), (3, 7166890), (5, 4300134), (6, 3583445), (10, 2150067), (15, 1433378), (30, 716689), (31, 693570), (61, 352470), (62, 346785), (93, 231190), (122, 176235), (155, 138714), (183, 117490), (186, 115595), (305, 70494), (310, 69357), (366, 58745), (379, 56730), (465, 46238), (610, 35247), (758, 28365), (915, 23498), (930, 23119), (1137, 18910), (1830, 11749), (1891, 11370), (1895, 11346), (2274, 9455), (3782, 5685), (3790, 5673)]