221039560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{487}}^1\times {\mathrm{1621}}^1$

素因数の和:2126

約数の個数: 64

約数和(自身を含む): 569905920

約数和(自身を除く): 348866360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 487, 974, 1621, 1948, 2435, 3242, 3409, 3896, 4870, 6484, 6818, 8105, 9740, 11347, 12968, 13636, 16210, 17045, 19480, 22694, 27272, 32420, 34090, 45388, 56735, 64840, 68180, 90776, 113470, 136360, 226940, 453880, 789427, 1578854, 3157708, 3947135, 5525989, 6315416, 7894270, 11051978, 15788540, 22103956, 27629945, 31577080, 44207912, 55259890, 110519780, 221039560]

約数ペア:

[(1, 221039560), (2, 110519780), (4, 55259890), (5, 44207912), (7, 31577080), (8, 27629945), (10, 22103956), (14, 15788540), (20, 11051978), (28, 7894270), (35, 6315416), (40, 5525989), (56, 3947135), (70, 3157708), (140, 1578854), (280, 789427), (487, 453880), (974, 226940), (1621, 136360), (1948, 113470), (2435, 90776), (3242, 68180), (3409, 64840), (3896, 56735), (4870, 45388), (6484, 34090), (6818, 32420), (8105, 27272), (9740, 22694), (11347, 19480), (12968, 17045), (13636, 16210)]