21315924

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{337}}^1$

素因数の和:605

約数の個数: 72

約数和(自身を含む): 62008128

約数和(自身を除く): 40692204

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 251, 252, 337, 502, 674, 753, 1004, 1011, 1348, 1506, 1757, 2022, 2259, 2359, 3012, 3033, 3514, 4044, 4518, 4718, 5271, 6066, 7028, 7077, 9036, 9436, 10542, 12132, 14154, 15813, 21084, 21231, 28308, 31626, 42462, 63252, 84587, 84924, 169174, 253761, 338348, 507522, 592109, 761283, 1015044, 1184218, 1522566, 1776327, 2368436, 3045132, 3552654, 5328981, 7105308, 10657962, 21315924]

約数ペア:

[(1, 21315924), (2, 10657962), (3, 7105308), (4, 5328981), (6, 3552654), (7, 3045132), (9, 2368436), (12, 1776327), (14, 1522566), (18, 1184218), (21, 1015044), (28, 761283), (36, 592109), (42, 507522), (63, 338348), (84, 253761), (126, 169174), (251, 84924), (252, 84587), (337, 63252), (502, 42462), (674, 31626), (753, 28308), (1004, 21231), (1011, 21084), (1348, 15813), (1506, 14154), (1757, 12132), (2022, 10542), (2259, 9436), (2359, 9036), (3012, 7077), (3033, 7028), (3514, 6066), (4044, 5271), (4518, 4718)]