18655868

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{509}}^1$

素因数の和:555

約数の個数: 72

約数和(自身を含む): 43953840

約数和(自身を除く): 25297972

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 49, 68, 77, 98, 119, 154, 187, 196, 238, 308, 374, 476, 509, 539, 748, 833, 1018, 1078, 1309, 1666, 2036, 2156, 2618, 3332, 3563, 5236, 5599, 7126, 8653, 9163, 11198, 14252, 17306, 18326, 22396, 24941, 34612, 36652, 39193, 49882, 60571, 78386, 95183, 99764, 121142, 156772, 190366, 242284, 274351, 380732, 423997, 548702, 666281, 847994, 1097404, 1332562, 1695988, 2665124, 4663967, 9327934, 18655868]

約数ペア:

[(1, 18655868), (2, 9327934), (4, 4663967), (7, 2665124), (11, 1695988), (14, 1332562), (17, 1097404), (22, 847994), (28, 666281), (34, 548702), (44, 423997), (49, 380732), (68, 274351), (77, 242284), (98, 190366), (119, 156772), (154, 121142), (187, 99764), (196, 95183), (238, 78386), (308, 60571), (374, 49882), (476, 39193), (509, 36652), (539, 34612), (748, 24941), (833, 22396), (1018, 18326), (1078, 17306), (1309, 14252), (1666, 11198), (2036, 9163), (2156, 8653), (2618, 7126), (3332, 5599), (3563, 5236)]