20390688

素因数分解:

$2^5\times 3^2\times {\mathrm{101}}^1\times {\mathrm{701}}^1$

素因数の和:818

約数の個数: 72

約数和(自身を含む): 58643676

約数和(自身を除く): 38252988

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 101, 144, 202, 288, 303, 404, 606, 701, 808, 909, 1212, 1402, 1616, 1818, 2103, 2424, 2804, 3232, 3636, 4206, 4848, 5608, 6309, 7272, 8412, 9696, 11216, 12618, 14544, 16824, 22432, 25236, 29088, 33648, 50472, 67296, 70801, 100944, 141602, 201888, 212403, 283204, 424806, 566408, 637209, 849612, 1132816, 1274418, 1699224, 2265632, 2548836, 3398448, 5097672, 6796896, 10195344, 20390688]

約数ペア:

[(1, 20390688), (2, 10195344), (3, 6796896), (4, 5097672), (6, 3398448), (8, 2548836), (9, 2265632), (12, 1699224), (16, 1274418), (18, 1132816), (24, 849612), (32, 637209), (36, 566408), (48, 424806), (72, 283204), (96, 212403), (101, 201888), (144, 141602), (202, 100944), (288, 70801), (303, 67296), (404, 50472), (606, 33648), (701, 29088), (808, 25236), (909, 22432), (1212, 16824), (1402, 14544), (1616, 12618), (1818, 11216), (2103, 9696), (2424, 8412), (2804, 7272), (3232, 6309), (3636, 5608), (4206, 4848)]