19820320

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{733}}^1$

素因数の和:774

約数の個数: 72

約数和(自身を含む): 50773716

約数和(自身を除く): 30953396

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 169, 208, 260, 338, 416, 520, 676, 733, 845, 1040, 1352, 1466, 1690, 2080, 2704, 2932, 3380, 3665, 5408, 5864, 6760, 7330, 9529, 11728, 13520, 14660, 19058, 23456, 27040, 29320, 38116, 47645, 58640, 76232, 95290, 117280, 123877, 152464, 190580, 247754, 304928, 381160, 495508, 619385, 762320, 991016, 1238770, 1524640, 1982032, 2477540, 3964064, 4955080, 9910160, 19820320]

約数ペア:

[(1, 19820320), (2, 9910160), (4, 4955080), (5, 3964064), (8, 2477540), (10, 1982032), (13, 1524640), (16, 1238770), (20, 991016), (26, 762320), (32, 619385), (40, 495508), (52, 381160), (65, 304928), (80, 247754), (104, 190580), (130, 152464), (160, 123877), (169, 117280), (208, 95290), (260, 76232), (338, 58640), (416, 47645), (520, 38116), (676, 29320), (733, 27040), (845, 23456), (1040, 19058), (1352, 14660), (1466, 13520), (1690, 11728), (2080, 9529), (2704, 7330), (2932, 6760), (3380, 5864), (3665, 5408)]