620199945

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{20663}}^1$

素因数の和:20726

約数の個数: 48

約数和(自身を含む): 1160490240

約数和(自身を除く): 540290295

約数列:

[1, 3, 5, 9, 15, 23, 29, 45, 69, 87, 115, 145, 207, 261, 345, 435, 667, 1035, 1305, 2001, 3335, 6003, 10005, 20663, 30015, 61989, 103315, 185967, 309945, 475249, 599227, 929835, 1425747, 1797681, 2376245, 2996135, 4277241, 5393043, 7128735, 8988405, 13782221, 21386205, 26965215, 41346663, 68911105, 124039989, 206733315, 620199945]

約数ペア:

[(1, 620199945), (3, 206733315), (5, 124039989), (9, 68911105), (15, 41346663), (23, 26965215), (29, 21386205), (45, 13782221), (69, 8988405), (87, 7128735), (115, 5393043), (145, 4277241), (207, 2996135), (261, 2376245), (345, 1797681), (435, 1425747), (667, 929835), (1035, 599227), (1305, 475249), (2001, 309945), (3335, 185967), (6003, 103315), (10005, 61989), (20663, 30015)]