20170400

素因数分解:

$2^5\times 5^2\times {\mathrm{19}}^1\times {\mathrm{1327}}^1$

素因数の和:1366

約数の個数: 72

約数和(自身を含む): 51871680

約数和(自身を除く): 31701280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 76, 80, 95, 100, 152, 160, 190, 200, 304, 380, 400, 475, 608, 760, 800, 950, 1327, 1520, 1900, 2654, 3040, 3800, 5308, 6635, 7600, 10616, 13270, 15200, 21232, 25213, 26540, 33175, 42464, 50426, 53080, 66350, 100852, 106160, 126065, 132700, 201704, 212320, 252130, 265400, 403408, 504260, 530800, 630325, 806816, 1008520, 1061600, 1260650, 2017040, 2521300, 4034080, 5042600, 10085200, 20170400]

約数ペア:

[(1, 20170400), (2, 10085200), (4, 5042600), (5, 4034080), (8, 2521300), (10, 2017040), (16, 1260650), (19, 1061600), (20, 1008520), (25, 806816), (32, 630325), (38, 530800), (40, 504260), (50, 403408), (76, 265400), (80, 252130), (95, 212320), (100, 201704), (152, 132700), (160, 126065), (190, 106160), (200, 100852), (304, 66350), (380, 53080), (400, 50426), (475, 42464), (608, 33175), (760, 26540), (800, 25213), (950, 21232), (1327, 15200), (1520, 13270), (1900, 10616), (2654, 7600), (3040, 6635), (3800, 5308)]