21037040

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4457}}^1$

素因数の和:4529

約数の個数: 40

約数和(自身を含む): 49751280

約数和(自身を除く): 28714240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4457, 4720, 8914, 17828, 22285, 35656, 44570, 71312, 89140, 178280, 262963, 356560, 525926, 1051852, 1314815, 2103704, 2629630, 4207408, 5259260, 10518520, 21037040]

約数ペア:

[(1, 21037040), (2, 10518520), (4, 5259260), (5, 4207408), (8, 2629630), (10, 2103704), (16, 1314815), (20, 1051852), (40, 525926), (59, 356560), (80, 262963), (118, 178280), (236, 89140), (295, 71312), (472, 44570), (590, 35656), (944, 22285), (1180, 17828), (2360, 8914), (4457, 4720)]