81138456

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{103}}^1\times {\mathrm{521}}^1$

素因数の和:646

約数の個数: 128

約数和(自身を含む): 260582400

約数和(自身を除く): 179443944

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 72, 84, 103, 108, 126, 168, 189, 206, 216, 252, 309, 378, 412, 504, 521, 618, 721, 756, 824, 927, 1042, 1236, 1442, 1512, 1563, 1854, 2084, 2163, 2472, 2781, 2884, 3126, 3647, 3708, 4168, 4326, 4689, 5562, 5768, 6252, 6489, 7294, 7416, 8652, 9378, 10941, 11124, 12504, 12978, 14067, 14588, 17304, 18756, 19467, 21882, 22248, 25956, 28134, 29176, 32823, 37512, 38934, 43764, 51912, 53663, 56268, 65646, 77868, 87528, 98469, 107326, 112536, 131292, 155736, 160989, 196938, 214652, 262584, 321978, 375641, 393876, 429304, 482967, 643956, 751282, 787752, 965934, 1126923, 1287912, 1448901, 1502564, 1931868, 2253846, 2897802, 3005128, 3380769, 3863736, 4507692, 5795604, 6761538, 9015384, 10142307, 11591208, 13523076, 20284614, 27046152, 40569228, 81138456]

約数ペア:

[(1, 81138456), (2, 40569228), (3, 27046152), (4, 20284614), (6, 13523076), (7, 11591208), (8, 10142307), (9, 9015384), (12, 6761538), (14, 5795604), (18, 4507692), (21, 3863736), (24, 3380769), (27, 3005128), (28, 2897802), (36, 2253846), (42, 1931868), (54, 1502564), (56, 1448901), (63, 1287912), (72, 1126923), (84, 965934), (103, 787752), (108, 751282), (126, 643956), (168, 482967), (189, 429304), (206, 393876), (216, 375641), (252, 321978), (309, 262584), (378, 214652), (412, 196938), (504, 160989), (521, 155736), (618, 131292), (721, 112536), (756, 107326), (824, 98469), (927, 87528), (1042, 77868), (1236, 65646), (1442, 56268), (1512, 53663), (1563, 51912), (1854, 43764), (2084, 38934), (2163, 37512), (2472, 32823), (2781, 29176), (2884, 28134), (3126, 25956), (3647, 22248), (3708, 21882), (4168, 19467), (4326, 18756), (4689, 17304), (5562, 14588), (5768, 14067), (6252, 12978), (6489, 12504), (7294, 11124), (7416, 10941), (8652, 9378)]