30281240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{68821}}^1$

素因数の和:68843

約数の個数: 32

約数和(自身を含む): 74327760

約数和(自身を除く): 44046520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 68821, 137642, 275284, 344105, 550568, 688210, 757031, 1376420, 1514062, 2752840, 3028124, 3785155, 6056248, 7570310, 15140620, 30281240]

約数ペア:

[(1, 30281240), (2, 15140620), (4, 7570310), (5, 6056248), (8, 3785155), (10, 3028124), (11, 2752840), (20, 1514062), (22, 1376420), (40, 757031), (44, 688210), (55, 550568), (88, 344105), (110, 275284), (220, 137642), (440, 68821)]