18384550

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:481

約数の個数: 48

約数和(自身を含む): 36604800

約数和(自身を除く): 18220250

約数列:

[1, 2, 5, 10, 25, 29, 31, 50, 58, 62, 145, 155, 290, 310, 409, 725, 775, 818, 899, 1450, 1550, 1798, 2045, 4090, 4495, 8990, 10225, 11861, 12679, 20450, 22475, 23722, 25358, 44950, 59305, 63395, 118610, 126790, 296525, 316975, 367691, 593050, 633950, 735382, 1838455, 3676910, 9192275, 18384550]

約数ペア:

[(1, 18384550), (2, 9192275), (5, 3676910), (10, 1838455), (25, 735382), (29, 633950), (31, 593050), (50, 367691), (58, 316975), (62, 296525), (145, 126790), (155, 118610), (290, 63395), (310, 59305), (409, 44950), (725, 25358), (775, 23722), (818, 22475), (899, 20450), (1450, 12679), (1550, 11861), (1798, 10225), (2045, 8990), (4090, 4495)]