285989775

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1249}}^1$

素因数の和:1376

約数の個数: 48

約数和(自身を含む): 491040000

約数和(自身を除く): 205050225

約数列:

[1, 3, 5, 15, 25, 43, 71, 75, 129, 213, 215, 355, 645, 1065, 1075, 1249, 1775, 3053, 3225, 3747, 5325, 6245, 9159, 15265, 18735, 31225, 45795, 53707, 76325, 88679, 93675, 161121, 228975, 266037, 268535, 443395, 805605, 1330185, 1342675, 2216975, 3813197, 4028025, 6650925, 11439591, 19065985, 57197955, 95329925, 285989775]

約数ペア:

[(1, 285989775), (3, 95329925), (5, 57197955), (15, 19065985), (25, 11439591), (43, 6650925), (71, 4028025), (75, 3813197), (129, 2216975), (213, 1342675), (215, 1330185), (355, 805605), (645, 443395), (1065, 268535), (1075, 266037), (1249, 228975), (1775, 161121), (3053, 93675), (3225, 88679), (3747, 76325), (5325, 53707), (6245, 45795), (9159, 31225), (15265, 18735)]