19971510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1249}}^1$

素因数の和:1313

約数の個数: 64

約数和(自身を含む): 52920000

約数和(自身を除く): 32948490

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 41, 65, 78, 82, 123, 130, 195, 205, 246, 390, 410, 533, 615, 1066, 1230, 1249, 1599, 2498, 2665, 3198, 3747, 5330, 6245, 7494, 7995, 12490, 15990, 16237, 18735, 32474, 37470, 48711, 51209, 81185, 97422, 102418, 153627, 162370, 243555, 256045, 307254, 487110, 512090, 665717, 768135, 1331434, 1536270, 1997151, 3328585, 3994302, 6657170, 9985755, 19971510]

約数ペア:

[(1, 19971510), (2, 9985755), (3, 6657170), (5, 3994302), (6, 3328585), (10, 1997151), (13, 1536270), (15, 1331434), (26, 768135), (30, 665717), (39, 512090), (41, 487110), (65, 307254), (78, 256045), (82, 243555), (123, 162370), (130, 153627), (195, 102418), (205, 97422), (246, 81185), (390, 51209), (410, 48711), (533, 37470), (615, 32474), (1066, 18735), (1230, 16237), (1249, 15990), (1599, 12490), (2498, 7995), (2665, 7494), (3198, 6245), (3747, 5330)]