21811120

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4621}}^1$

素因数の和:4693

約数の個数: 40

約数和(自身を含む): 51581520

約数和(自身を除く): 29770400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4621, 4720, 9242, 18484, 23105, 36968, 46210, 73936, 92420, 184840, 272639, 369680, 545278, 1090556, 1363195, 2181112, 2726390, 4362224, 5452780, 10905560, 21811120]

約数ペア:

[(1, 21811120), (2, 10905560), (4, 5452780), (5, 4362224), (8, 2726390), (10, 2181112), (16, 1363195), (20, 1090556), (40, 545278), (59, 369680), (80, 272639), (118, 184840), (236, 92420), (295, 73936), (472, 46210), (590, 36968), (944, 23105), (1180, 18484), (2360, 9242), (4621, 4720)]