17841980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{421}}^1$

素因数の和:606

約数の個数: 48

約数和(自身を含む): 40694304

約数和(自身を除く): 22852324

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 163, 260, 326, 421, 652, 815, 842, 1630, 1684, 2105, 2119, 3260, 4210, 4238, 5473, 8420, 8476, 10595, 10946, 21190, 21892, 27365, 42380, 54730, 68623, 109460, 137246, 274492, 343115, 686230, 892099, 1372460, 1784198, 3568396, 4460495, 8920990, 17841980]

約数ペア:

[(1, 17841980), (2, 8920990), (4, 4460495), (5, 3568396), (10, 1784198), (13, 1372460), (20, 892099), (26, 686230), (52, 343115), (65, 274492), (130, 137246), (163, 109460), (260, 68623), (326, 54730), (421, 42380), (652, 27365), (815, 21892), (842, 21190), (1630, 10946), (1684, 10595), (2105, 8476), (2119, 8420), (3260, 5473), (4210, 4238)]