21304820990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8009}}^1\times {\mathrm{8581}}^1$

素因数の和:16628

約数の個数: 32

約数和(自身を含む): 39595288320

約数和(自身を除く): 18290467330

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 8009, 8581, 16018, 17162, 40045, 42905, 80090, 85810, 248279, 266011, 496558, 532022, 1241395, 1330055, 2482790, 2660110, 68725229, 137450458, 343626145, 687252290, 2130482099, 4260964198, 10652410495, 21304820990]

約数ペア:

[(1, 21304820990), (2, 10652410495), (5, 4260964198), (10, 2130482099), (31, 687252290), (62, 343626145), (155, 137450458), (310, 68725229), (8009, 2660110), (8581, 2482790), (16018, 1330055), (17162, 1241395), (40045, 532022), (42905, 496558), (80090, 266011), (85810, 248279)]