21497550

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{19}}^2\times {\mathrm{397}}^1$

素因数の和:450

約数の個数: 72

約数和(自身を含む): 56409336

約数和(自身を除く): 34911786

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 25, 30, 38, 50, 57, 75, 95, 114, 150, 190, 285, 361, 397, 475, 570, 722, 794, 950, 1083, 1191, 1425, 1805, 1985, 2166, 2382, 2850, 3610, 3970, 5415, 5955, 7543, 9025, 9925, 10830, 11910, 15086, 18050, 19850, 22629, 27075, 29775, 37715, 45258, 54150, 59550, 75430, 113145, 143317, 188575, 226290, 286634, 377150, 429951, 565725, 716585, 859902, 1131450, 1433170, 2149755, 3582925, 4299510, 7165850, 10748775, 21497550]

約数ペア:

[(1, 21497550), (2, 10748775), (3, 7165850), (5, 4299510), (6, 3582925), (10, 2149755), (15, 1433170), (19, 1131450), (25, 859902), (30, 716585), (38, 565725), (50, 429951), (57, 377150), (75, 286634), (95, 226290), (114, 188575), (150, 143317), (190, 113145), (285, 75430), (361, 59550), (397, 54150), (475, 45258), (570, 37715), (722, 29775), (794, 27075), (950, 22629), (1083, 19850), (1191, 18050), (1425, 15086), (1805, 11910), (1985, 10830), (2166, 9925), (2382, 9025), (2850, 7543), (3610, 5955), (3970, 5415)]