19555480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{331}}^1$

素因数の和:560

約数の個数: 64

約数和(自身を含む): 50676480

約数和(自身を除く): 31121000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 211, 280, 331, 422, 662, 844, 1055, 1324, 1477, 1655, 1688, 2110, 2317, 2648, 2954, 3310, 4220, 4634, 5908, 6620, 7385, 8440, 9268, 11585, 11816, 13240, 14770, 18536, 23170, 29540, 46340, 59080, 69841, 92680, 139682, 279364, 349205, 488887, 558728, 698410, 977774, 1396820, 1955548, 2444435, 2793640, 3911096, 4888870, 9777740, 19555480]

約数ペア:

[(1, 19555480), (2, 9777740), (4, 4888870), (5, 3911096), (7, 2793640), (8, 2444435), (10, 1955548), (14, 1396820), (20, 977774), (28, 698410), (35, 558728), (40, 488887), (56, 349205), (70, 279364), (140, 139682), (211, 92680), (280, 69841), (331, 59080), (422, 46340), (662, 29540), (844, 23170), (1055, 18536), (1324, 14770), (1477, 13240), (1655, 11816), (1688, 11585), (2110, 9268), (2317, 8440), (2648, 7385), (2954, 6620), (3310, 5908), (4220, 4634)]