18022780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{709}}^1$

素因数の和:790

約数の個数: 48

約数和(自身を含む): 40078080

約数和(自身を除く): 22055300

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 709, 820, 1271, 1418, 2542, 2836, 3545, 5084, 6355, 7090, 12710, 14180, 21979, 25420, 29069, 43958, 58138, 87916, 109895, 116276, 145345, 219790, 290690, 439580, 581380, 901139, 1802278, 3604556, 4505695, 9011390, 18022780]

約数ペア:

[(1, 18022780), (2, 9011390), (4, 4505695), (5, 3604556), (10, 1802278), (20, 901139), (31, 581380), (41, 439580), (62, 290690), (82, 219790), (124, 145345), (155, 116276), (164, 109895), (205, 87916), (310, 58138), (410, 43958), (620, 29069), (709, 25420), (820, 21979), (1271, 14180), (1418, 12710), (2542, 7090), (2836, 6355), (3545, 5084)]