19720290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1193}}^1$

素因数の和:1251

約数の個数: 64

約数和(自身を含む): 51580800

約数和(自身を除く): 31860510

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 29, 30, 38, 57, 58, 87, 95, 114, 145, 174, 190, 285, 290, 435, 551, 570, 870, 1102, 1193, 1653, 2386, 2755, 3306, 3579, 5510, 5965, 7158, 8265, 11930, 16530, 17895, 22667, 34597, 35790, 45334, 68001, 69194, 103791, 113335, 136002, 172985, 207582, 226670, 340005, 345970, 518955, 657343, 680010, 1037910, 1314686, 1972029, 3286715, 3944058, 6573430, 9860145, 19720290]

約数ペア:

[(1, 19720290), (2, 9860145), (3, 6573430), (5, 3944058), (6, 3286715), (10, 1972029), (15, 1314686), (19, 1037910), (29, 680010), (30, 657343), (38, 518955), (57, 345970), (58, 340005), (87, 226670), (95, 207582), (114, 172985), (145, 136002), (174, 113335), (190, 103791), (285, 69194), (290, 68001), (435, 45334), (551, 35790), (570, 34597), (870, 22667), (1102, 17895), (1193, 16530), (1653, 11930), (2386, 8265), (2755, 7158), (3306, 5965), (3579, 5510)]