20920150

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^2\times {\mathrm{83}}^1$

素因数の和:237

約数の個数: 36

約数和(自身を含む): 39942756

約数和(自身を除く): 19022606

約数列:

[1, 2, 5, 10, 25, 50, 71, 83, 142, 166, 355, 415, 710, 830, 1775, 2075, 3550, 4150, 5041, 5893, 10082, 11786, 25205, 29465, 50410, 58930, 126025, 147325, 252050, 294650, 418403, 836806, 2092015, 4184030, 10460075, 20920150]

約数ペア:

[(1, 20920150), (2, 10460075), (5, 4184030), (10, 2092015), (25, 836806), (50, 418403), (71, 294650), (83, 252050), (142, 147325), (166, 126025), (355, 58930), (415, 50410), (710, 29465), (830, 25205), (1775, 11786), (2075, 10082), (3550, 5893), (4150, 5041)]