21577890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:435

約数の個数: 64

約数和(自身を含む): 54214272

約数和(自身を除く): 32636382

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 41, 53, 82, 106, 123, 159, 205, 246, 265, 318, 331, 410, 530, 615, 662, 795, 993, 1230, 1590, 1655, 1986, 2173, 3310, 4346, 4965, 6519, 9930, 10865, 13038, 13571, 17543, 21730, 27142, 32595, 35086, 40713, 52629, 65190, 67855, 81426, 87715, 105258, 135710, 175430, 203565, 263145, 407130, 526290, 719263, 1438526, 2157789, 3596315, 4315578, 7192630, 10788945, 21577890]

約数ペア:

[(1, 21577890), (2, 10788945), (3, 7192630), (5, 4315578), (6, 3596315), (10, 2157789), (15, 1438526), (30, 719263), (41, 526290), (53, 407130), (82, 263145), (106, 203565), (123, 175430), (159, 135710), (205, 105258), (246, 87715), (265, 81426), (318, 67855), (331, 65190), (410, 52629), (530, 40713), (615, 35086), (662, 32595), (795, 27142), (993, 21730), (1230, 17543), (1590, 13571), (1655, 13038), (1986, 10865), (2173, 9930), (3310, 6519), (4346, 4965)]