256685175

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{257}}^1$

素因数の和:489

約数の個数: 72

約数和(自身を含む): 484102944

約数和(自身を除く): 227417769

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 193, 207, 225, 257, 345, 575, 579, 771, 965, 1035, 1285, 1725, 1737, 2313, 2895, 3855, 4439, 4825, 5175, 5911, 6425, 8685, 11565, 13317, 14475, 17733, 19275, 22195, 29555, 39951, 43425, 49601, 53199, 57825, 66585, 88665, 110975, 147775, 148803, 199755, 248005, 265995, 332925, 443325, 446409, 744015, 998775, 1140823, 1240025, 1329975, 2232045, 3422469, 3720075, 5704115, 10267407, 11160225, 17112345, 28520575, 51337035, 85561725, 256685175]

約数ペア:

[(1, 256685175), (3, 85561725), (5, 51337035), (9, 28520575), (15, 17112345), (23, 11160225), (25, 10267407), (45, 5704115), (69, 3720075), (75, 3422469), (115, 2232045), (193, 1329975), (207, 1240025), (225, 1140823), (257, 998775), (345, 744015), (575, 446409), (579, 443325), (771, 332925), (965, 265995), (1035, 248005), (1285, 199755), (1725, 148803), (1737, 147775), (2313, 110975), (2895, 88665), (3855, 66585), (4439, 57825), (4825, 53199), (5175, 49601), (5911, 43425), (6425, 39951), (8685, 29555), (11565, 22195), (13317, 19275), (14475, 17733)]