19875440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{659}}^1$

素因数の和:714

約数の個数: 80

約数和(自身を含む): 51559200

約数和(自身を除く): 31683760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 29, 40, 52, 58, 65, 80, 104, 116, 130, 145, 208, 232, 260, 290, 377, 464, 520, 580, 659, 754, 1040, 1160, 1318, 1508, 1885, 2320, 2636, 3016, 3295, 3770, 5272, 6032, 6590, 7540, 8567, 10544, 13180, 15080, 17134, 19111, 26360, 30160, 34268, 38222, 42835, 52720, 68536, 76444, 85670, 95555, 137072, 152888, 171340, 191110, 248443, 305776, 342680, 382220, 496886, 685360, 764440, 993772, 1242215, 1528880, 1987544, 2484430, 3975088, 4968860, 9937720, 19875440]

約数ペア:

[(1, 19875440), (2, 9937720), (4, 4968860), (5, 3975088), (8, 2484430), (10, 1987544), (13, 1528880), (16, 1242215), (20, 993772), (26, 764440), (29, 685360), (40, 496886), (52, 382220), (58, 342680), (65, 305776), (80, 248443), (104, 191110), (116, 171340), (130, 152888), (145, 137072), (208, 95555), (232, 85670), (260, 76444), (290, 68536), (377, 52720), (464, 42835), (520, 38222), (580, 34268), (659, 30160), (754, 26360), (1040, 19111), (1160, 17134), (1318, 15080), (1508, 13180), (1885, 10544), (2320, 8567), (2636, 7540), (3016, 6590), (3295, 6032), (3770, 5272)]