18135520

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8719}}^1$

素因数の和:8747

約数の個数: 48

約数和(自身を含む): 46146240

約数和(自身を除く): 28010720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 8719, 17438, 34876, 43595, 69752, 87190, 113347, 139504, 174380, 226694, 279008, 348760, 453388, 566735, 697520, 906776, 1133470, 1395040, 1813552, 2266940, 3627104, 4533880, 9067760, 18135520]

約数ペア:

[(1, 18135520), (2, 9067760), (4, 4533880), (5, 3627104), (8, 2266940), (10, 1813552), (13, 1395040), (16, 1133470), (20, 906776), (26, 697520), (32, 566735), (40, 453388), (52, 348760), (65, 279008), (80, 226694), (104, 174380), (130, 139504), (160, 113347), (208, 87190), (260, 69752), (416, 43595), (520, 34876), (1040, 17438), (2080, 8719)]