128486500

素因数分解:

$2^2\times 5^3\times {\mathrm{313}}^1\times {\mathrm{821}}^1$

素因数の和:1153

約数の個数: 48

約数和(自身を含む): 281853936

約数和(自身を除く): 153367436

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 313, 500, 626, 821, 1252, 1565, 1642, 3130, 3284, 4105, 6260, 7825, 8210, 15650, 16420, 20525, 31300, 39125, 41050, 78250, 82100, 102625, 156500, 205250, 256973, 410500, 513946, 1027892, 1284865, 2569730, 5139460, 6424325, 12848650, 25697300, 32121625, 64243250, 128486500]

約数ペア:

[(1, 128486500), (2, 64243250), (4, 32121625), (5, 25697300), (10, 12848650), (20, 6424325), (25, 5139460), (50, 2569730), (100, 1284865), (125, 1027892), (250, 513946), (313, 410500), (500, 256973), (626, 205250), (821, 156500), (1252, 102625), (1565, 82100), (1642, 78250), (3130, 41050), (3284, 39125), (4105, 31300), (6260, 20525), (7825, 16420), (8210, 15650)]