31128500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{4789}}^1$

素因数の和:4821

約数の個数: 48

約数和(自身を含む): 73229520

約数和(自身を除く): 42101020

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3250, 4789, 6500, 9578, 19156, 23945, 47890, 62257, 95780, 119725, 124514, 239450, 249028, 311285, 478900, 598625, 622570, 1197250, 1245140, 1556425, 2394500, 3112850, 6225700, 7782125, 15564250, 31128500]

約数ペア:

[(1, 31128500), (2, 15564250), (4, 7782125), (5, 6225700), (10, 3112850), (13, 2394500), (20, 1556425), (25, 1245140), (26, 1197250), (50, 622570), (52, 598625), (65, 478900), (100, 311285), (125, 249028), (130, 239450), (250, 124514), (260, 119725), (325, 95780), (500, 62257), (650, 47890), (1300, 23945), (1625, 19156), (3250, 9578), (4789, 6500)]