21900285

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{293}}^1$

素因数の和:466

約数の個数: 48

約数和(自身を含む): 41827968

約数和(自身を除く): 19927683

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 151, 165, 293, 453, 495, 755, 879, 1359, 1465, 1661, 2265, 2637, 3223, 4395, 4983, 6795, 8305, 9669, 13185, 14949, 16115, 24915, 29007, 44243, 48345, 74745, 132729, 145035, 221215, 398187, 486673, 663645, 1460019, 1990935, 2433365, 4380057, 7300095, 21900285]

約数ペア:

[(1, 21900285), (3, 7300095), (5, 4380057), (9, 2433365), (11, 1990935), (15, 1460019), (33, 663645), (45, 486673), (55, 398187), (99, 221215), (151, 145035), (165, 132729), (293, 74745), (453, 48345), (495, 44243), (755, 29007), (879, 24915), (1359, 16115), (1465, 14949), (1661, 13185), (2265, 9669), (2637, 8305), (3223, 6795), (4395, 4983)]