21726030

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^2\times {\mathrm{37}}^2$

素因数の和:130

約数の個数: 72

約数和(自身を含む): 56021112

約数和(自身を除く): 34295082

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 37, 46, 69, 74, 111, 115, 138, 185, 222, 230, 345, 370, 529, 555, 690, 851, 1058, 1110, 1369, 1587, 1702, 2553, 2645, 2738, 3174, 4107, 4255, 5106, 5290, 6845, 7935, 8214, 8510, 12765, 13690, 15870, 19573, 20535, 25530, 31487, 39146, 41070, 58719, 62974, 94461, 97865, 117438, 157435, 188922, 195730, 293595, 314870, 472305, 587190, 724201, 944610, 1448402, 2172603, 3621005, 4345206, 7242010, 10863015, 21726030]

約数ペア:

[(1, 21726030), (2, 10863015), (3, 7242010), (5, 4345206), (6, 3621005), (10, 2172603), (15, 1448402), (23, 944610), (30, 724201), (37, 587190), (46, 472305), (69, 314870), (74, 293595), (111, 195730), (115, 188922), (138, 157435), (185, 117438), (222, 97865), (230, 94461), (345, 62974), (370, 58719), (529, 41070), (555, 39146), (690, 31487), (851, 25530), (1058, 20535), (1110, 19573), (1369, 15870), (1587, 13690), (1702, 12765), (2553, 8510), (2645, 8214), (2738, 7935), (3174, 6845), (4107, 5290), (4255, 5106)]