20561750

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{7477}}^1$

素因数の和:7505

約数の個数: 32

約数和(自身を含む): 41996448

約数和(自身を除く): 21434698

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 550, 1375, 2750, 7477, 14954, 37385, 74770, 82247, 164494, 186925, 373850, 411235, 822470, 934625, 1869250, 2056175, 4112350, 10280875, 20561750]

約数ペア:

[(1, 20561750), (2, 10280875), (5, 4112350), (10, 2056175), (11, 1869250), (22, 934625), (25, 822470), (50, 411235), (55, 373850), (110, 186925), (125, 164494), (250, 82247), (275, 74770), (550, 37385), (1375, 14954), (2750, 7477)]