398528520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{255467}}^1$

素因数の和:255494

約数の個数: 64

約数和(自身を含む): 1287558720

約数和(自身を除く): 889030200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 255467, 510934, 766401, 1021868, 1277335, 1532802, 2043736, 2554670, 3065604, 3321071, 3832005, 5109340, 6131208, 6642142, 7664010, 9963213, 10218680, 13284284, 15328020, 16605355, 19926426, 26568568, 30656040, 33210710, 39852852, 49816065, 66421420, 79705704, 99632130, 132842840, 199264260, 398528520]

約数ペア:

[(1, 398528520), (2, 199264260), (3, 132842840), (4, 99632130), (5, 79705704), (6, 66421420), (8, 49816065), (10, 39852852), (12, 33210710), (13, 30656040), (15, 26568568), (20, 19926426), (24, 16605355), (26, 15328020), (30, 13284284), (39, 10218680), (40, 9963213), (52, 7664010), (60, 6642142), (65, 6131208), (78, 5109340), (104, 3832005), (120, 3321071), (130, 3065604), (156, 2554670), (195, 2043736), (260, 1532802), (312, 1277335), (390, 1021868), (520, 766401), (780, 510934), (1560, 255467)]