21992025

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1$

素因数の和:127

約数の個数: 96

約数和(自身を含む): 44282880

約数和(自身を除く): 22290855

約数列:

[1, 3, 5, 11, 15, 19, 23, 25, 33, 55, 57, 61, 69, 75, 95, 115, 165, 183, 209, 253, 275, 285, 305, 345, 437, 475, 575, 627, 671, 759, 825, 915, 1045, 1159, 1265, 1311, 1403, 1425, 1525, 1725, 2013, 2185, 3135, 3355, 3477, 3795, 4209, 4575, 4807, 5225, 5795, 6325, 6555, 7015, 10065, 10925, 12749, 14421, 15433, 15675, 16775, 17385, 18975, 21045, 24035, 26657, 28975, 32775, 35075, 38247, 46299, 50325, 63745, 72105, 77165, 79971, 86925, 105225, 120175, 133285, 191235, 231495, 293227, 318725, 360525, 385825, 399855, 666425, 879681, 956175, 1157475, 1466135, 1999275, 4398405, 7330675, 21992025]

約数ペア:

[(1, 21992025), (3, 7330675), (5, 4398405), (11, 1999275), (15, 1466135), (19, 1157475), (23, 956175), (25, 879681), (33, 666425), (55, 399855), (57, 385825), (61, 360525), (69, 318725), (75, 293227), (95, 231495), (115, 191235), (165, 133285), (183, 120175), (209, 105225), (253, 86925), (275, 79971), (285, 77165), (305, 72105), (345, 63745), (437, 50325), (475, 46299), (575, 38247), (627, 35075), (671, 32775), (759, 28975), (825, 26657), (915, 24035), (1045, 21045), (1159, 18975), (1265, 17385), (1311, 16775), (1403, 15675), (1425, 15433), (1525, 14421), (1725, 12749), (2013, 10925), (2185, 10065), (3135, 7015), (3355, 6555), (3477, 6325), (3795, 5795), (4209, 5225), (4575, 4807)]