19770460

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{383}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 23775140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 89, 116, 145, 178, 290, 356, 383, 445, 580, 766, 890, 1532, 1780, 1915, 2581, 3830, 5162, 7660, 10324, 11107, 12905, 22214, 25810, 34087, 44428, 51620, 55535, 68174, 111070, 136348, 170435, 222140, 340870, 681740, 988523, 1977046, 3954092, 4942615, 9885230, 19770460]

約数ペア:

[(1, 19770460), (2, 9885230), (4, 4942615), (5, 3954092), (10, 1977046), (20, 988523), (29, 681740), (58, 340870), (89, 222140), (116, 170435), (145, 136348), (178, 111070), (290, 68174), (356, 55535), (383, 51620), (445, 44428), (580, 34087), (766, 25810), (890, 22214), (1532, 12905), (1780, 11107), (1915, 10324), (2581, 7660), (3830, 5162)]