21491250

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{521}}^1$

素因数の和:557

約数の個数: 80

約数和(自身を含む): 58706208

約数和(自身を除く): 37214958

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 25, 30, 33, 50, 55, 66, 75, 110, 125, 150, 165, 250, 275, 330, 375, 521, 550, 625, 750, 825, 1042, 1250, 1375, 1563, 1650, 1875, 2605, 2750, 3126, 3750, 4125, 5210, 5731, 6875, 7815, 8250, 11462, 13025, 13750, 15630, 17193, 20625, 26050, 28655, 34386, 39075, 41250, 57310, 65125, 78150, 85965, 130250, 143275, 171930, 195375, 286550, 325625, 390750, 429825, 651250, 716375, 859650, 976875, 1432750, 1953750, 2149125, 3581875, 4298250, 7163750, 10745625, 21491250]

約数ペア:

[(1, 21491250), (2, 10745625), (3, 7163750), (5, 4298250), (6, 3581875), (10, 2149125), (11, 1953750), (15, 1432750), (22, 976875), (25, 859650), (30, 716375), (33, 651250), (50, 429825), (55, 390750), (66, 325625), (75, 286550), (110, 195375), (125, 171930), (150, 143275), (165, 130250), (250, 85965), (275, 78150), (330, 65125), (375, 57310), (521, 41250), (550, 39075), (625, 34386), (750, 28655), (825, 26050), (1042, 20625), (1250, 17193), (1375, 15630), (1563, 13750), (1650, 13025), (1875, 11462), (2605, 8250), (2750, 7815), (3126, 6875), (3750, 5731), (4125, 5210)]