216321740

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{331}}^1\times {\mathrm{797}}^1$

素因数の和:1178

約数の個数: 48

約数和(自身を含む): 467347104

約数和(自身を除く): 251025364

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 331, 410, 662, 797, 820, 1324, 1594, 1655, 3188, 3310, 3985, 6620, 7970, 13571, 15940, 27142, 32677, 54284, 65354, 67855, 130708, 135710, 163385, 263807, 271420, 326770, 527614, 653540, 1055228, 1319035, 2638070, 5276140, 10816087, 21632174, 43264348, 54080435, 108160870, 216321740]

約数ペア:

[(1, 216321740), (2, 108160870), (4, 54080435), (5, 43264348), (10, 21632174), (20, 10816087), (41, 5276140), (82, 2638070), (164, 1319035), (205, 1055228), (331, 653540), (410, 527614), (662, 326770), (797, 271420), (820, 263807), (1324, 163385), (1594, 135710), (1655, 130708), (3188, 67855), (3310, 65354), (3985, 54284), (6620, 32677), (7970, 27142), (13571, 15940)]