218907555

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{113}}^1$

素因数の和:316

約数の個数: 64

約数和(自身を含む): 382952448

約数和(自身を除く): 164044893

約数列:

[1, 3, 5, 15, 17, 51, 71, 85, 107, 113, 213, 255, 321, 339, 355, 535, 565, 1065, 1207, 1605, 1695, 1819, 1921, 3621, 5457, 5763, 6035, 7597, 8023, 9095, 9605, 12091, 18105, 22791, 24069, 27285, 28815, 36273, 37985, 40115, 60455, 113955, 120345, 129149, 136391, 181365, 205547, 387447, 409173, 616641, 645745, 681955, 858461, 1027735, 1937235, 2045865, 2575383, 3083205, 4292305, 12876915, 14593837, 43781511, 72969185, 218907555]

約数ペア:

[(1, 218907555), (3, 72969185), (5, 43781511), (15, 14593837), (17, 12876915), (51, 4292305), (71, 3083205), (85, 2575383), (107, 2045865), (113, 1937235), (213, 1027735), (255, 858461), (321, 681955), (339, 645745), (355, 616641), (535, 409173), (565, 387447), (1065, 205547), (1207, 181365), (1605, 136391), (1695, 129149), (1819, 120345), (1921, 113955), (3621, 60455), (5457, 40115), (5763, 37985), (6035, 36273), (7597, 28815), (8023, 27285), (9095, 24069), (9605, 22791), (12091, 18105)]