81879408

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{229}}^1$

素因数の和:447

約数の個数: 120

約数和(自身を含む): 249150720

約数和(自身を除く): 167271312

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 191, 208, 229, 234, 312, 382, 458, 468, 573, 624, 687, 764, 916, 936, 1146, 1374, 1528, 1719, 1832, 1872, 2061, 2292, 2483, 2748, 2977, 3056, 3438, 3664, 4122, 4584, 4966, 5496, 5954, 6876, 7449, 8244, 8931, 9168, 9932, 10992, 11908, 13752, 14898, 16488, 17862, 19864, 22347, 23816, 26793, 27504, 29796, 32976, 35724, 39728, 43739, 44694, 47632, 53586, 59592, 71448, 87478, 89388, 107172, 119184, 131217, 142896, 174956, 178776, 214344, 262434, 349912, 357552, 393651, 428688, 524868, 568607, 699824, 787302, 1049736, 1137214, 1574604, 1705821, 2099472, 2274428, 3149208, 3411642, 4548856, 5117463, 6298416, 6823284, 9097712, 10234926, 13646568, 20469852, 27293136, 40939704, 81879408]

約数ペア:

[(1, 81879408), (2, 40939704), (3, 27293136), (4, 20469852), (6, 13646568), (8, 10234926), (9, 9097712), (12, 6823284), (13, 6298416), (16, 5117463), (18, 4548856), (24, 3411642), (26, 3149208), (36, 2274428), (39, 2099472), (48, 1705821), (52, 1574604), (72, 1137214), (78, 1049736), (104, 787302), (117, 699824), (144, 568607), (156, 524868), (191, 428688), (208, 393651), (229, 357552), (234, 349912), (312, 262434), (382, 214344), (458, 178776), (468, 174956), (573, 142896), (624, 131217), (687, 119184), (764, 107172), (916, 89388), (936, 87478), (1146, 71448), (1374, 59592), (1528, 53586), (1719, 47632), (1832, 44694), (1872, 43739), (2061, 39728), (2292, 35724), (2483, 32976), (2748, 29796), (2977, 27504), (3056, 26793), (3438, 23816), (3664, 22347), (4122, 19864), (4584, 17862), (4966, 16488), (5496, 14898), (5954, 13752), (6876, 11908), (7449, 10992), (8244, 9932), (8931, 9168)]