27801680

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:228

約数の個数: 80

約数和(自身を含む): 67495680

約数和(自身を除く): 39694000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 79, 80, 83, 106, 158, 166, 212, 265, 316, 332, 395, 415, 424, 530, 632, 664, 790, 830, 848, 1060, 1264, 1328, 1580, 1660, 2120, 3160, 3320, 4187, 4240, 4399, 6320, 6557, 6640, 8374, 8798, 13114, 16748, 17596, 20935, 21995, 26228, 32785, 33496, 35192, 41870, 43990, 52456, 65570, 66992, 70384, 83740, 87980, 104912, 131140, 167480, 175960, 262280, 334960, 347521, 351920, 524560, 695042, 1390084, 1737605, 2780168, 3475210, 5560336, 6950420, 13900840, 27801680]

約数ペア:

[(1, 27801680), (2, 13900840), (4, 6950420), (5, 5560336), (8, 3475210), (10, 2780168), (16, 1737605), (20, 1390084), (40, 695042), (53, 524560), (79, 351920), (80, 347521), (83, 334960), (106, 262280), (158, 175960), (166, 167480), (212, 131140), (265, 104912), (316, 87980), (332, 83740), (395, 70384), (415, 66992), (424, 65570), (530, 52456), (632, 43990), (664, 41870), (790, 35192), (830, 33496), (848, 32785), (1060, 26228), (1264, 21995), (1328, 20935), (1580, 17596), (1660, 16748), (2120, 13114), (3160, 8798), (3320, 8374), (4187, 6640), (4240, 6557), (4399, 6320)]