1978103660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{223}}^1\times {\mathrm{313}}^1$

素因数の和:667

約数の個数: 96

約数和(自身を含む): 4549332480

約数和(自身を除く): 2571228820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 223, 260, 313, 436, 446, 545, 626, 892, 1090, 1115, 1252, 1417, 1565, 2180, 2230, 2834, 2899, 3130, 4069, 4460, 5668, 5798, 6260, 7085, 8138, 11596, 14170, 14495, 16276, 20345, 24307, 28340, 28990, 34117, 40690, 48614, 57980, 68234, 69799, 81380, 97228, 121535, 136468, 139598, 170585, 243070, 279196, 315991, 341170, 348995, 443521, 486140, 631982, 682340, 697990, 887042, 907387, 1263964, 1395980, 1579955, 1774084, 1814774, 2217605, 3159910, 3629548, 4435210, 4536935, 6319820, 7608091, 8870420, 9073870, 15216182, 18147740, 30432364, 38040455, 76080910, 98905183, 152161820, 197810366, 395620732, 494525915, 989051830, 1978103660]

約数ペア:

[(1, 1978103660), (2, 989051830), (4, 494525915), (5, 395620732), (10, 197810366), (13, 152161820), (20, 98905183), (26, 76080910), (52, 38040455), (65, 30432364), (109, 18147740), (130, 15216182), (218, 9073870), (223, 8870420), (260, 7608091), (313, 6319820), (436, 4536935), (446, 4435210), (545, 3629548), (626, 3159910), (892, 2217605), (1090, 1814774), (1115, 1774084), (1252, 1579955), (1417, 1395980), (1565, 1263964), (2180, 907387), (2230, 887042), (2834, 697990), (2899, 682340), (3130, 631982), (4069, 486140), (4460, 443521), (5668, 348995), (5798, 341170), (6260, 315991), (7085, 279196), (8138, 243070), (11596, 170585), (14170, 139598), (14495, 136468), (16276, 121535), (20345, 97228), (24307, 81380), (28340, 69799), (28990, 68234), (34117, 57980), (40690, 48614)]