20391395616

素因数分解:

$2^5\times 3^2\times {\mathrm{109}}^1\times {\mathrm{649573}}^1$

素因数の和:649698

約数の個数: 72

約数和(自身を含む): 58520121660

約数和(自身を除く): 38128726044

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 109, 144, 218, 288, 327, 436, 654, 872, 981, 1308, 1744, 1962, 2616, 3488, 3924, 5232, 7848, 10464, 15696, 31392, 649573, 1299146, 1948719, 2598292, 3897438, 5196584, 5846157, 7794876, 10393168, 11692314, 15589752, 20786336, 23384628, 31179504, 46769256, 62359008, 70803457, 93538512, 141606914, 187077024, 212410371, 283213828, 424820742, 566427656, 637231113, 849641484, 1132855312, 1274462226, 1699282968, 2265710624, 2548924452, 3398565936, 5097848904, 6797131872, 10195697808, 20391395616]

約数ペア:

[(1, 20391395616), (2, 10195697808), (3, 6797131872), (4, 5097848904), (6, 3398565936), (8, 2548924452), (9, 2265710624), (12, 1699282968), (16, 1274462226), (18, 1132855312), (24, 849641484), (32, 637231113), (36, 566427656), (48, 424820742), (72, 283213828), (96, 212410371), (109, 187077024), (144, 141606914), (218, 93538512), (288, 70803457), (327, 62359008), (436, 46769256), (654, 31179504), (872, 23384628), (981, 20786336), (1308, 15589752), (1744, 11692314), (1962, 10393168), (2616, 7794876), (3488, 5846157), (3924, 5196584), (5232, 3897438), (7848, 2598292), (10464, 1948719), (15696, 1299146), (31392, 649573)]