21721390

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1709}}^1$

素因数の和:1788

約数の個数: 32

約数和(自身を含む): 41368320

約数和(自身を除く): 19646930

約数列:

[1, 2, 5, 10, 31, 41, 62, 82, 155, 205, 310, 410, 1271, 1709, 2542, 3418, 6355, 8545, 12710, 17090, 52979, 70069, 105958, 140138, 264895, 350345, 529790, 700690, 2172139, 4344278, 10860695, 21721390]

約数ペア:

[(1, 21721390), (2, 10860695), (5, 4344278), (10, 2172139), (31, 700690), (41, 529790), (62, 350345), (82, 264895), (155, 140138), (205, 105958), (310, 70069), (410, 52979), (1271, 17090), (1709, 12710), (2542, 8545), (3418, 6355)]