128537720

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{60631}}^1$

素因数の和:60695

約数の個数: 32

約数和(自身を含む): 294671520

約数和(自身を除く): 166133800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 60631, 121262, 242524, 303155, 485048, 606310, 1212620, 2425240, 3213443, 6426886, 12853772, 16067215, 25707544, 32134430, 64268860, 128537720]

約数ペア:

[(1, 128537720), (2, 64268860), (4, 32134430), (5, 25707544), (8, 16067215), (10, 12853772), (20, 6426886), (40, 3213443), (53, 2425240), (106, 1212620), (212, 606310), (265, 485048), (424, 303155), (530, 242524), (1060, 121262), (2120, 60631)]