20885452

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:163

約数の個数: 72

約数和(自身を含む): 46418400

約数和(自身を除く): 25532948

約数列:

[1, 2, 4, 7, 14, 17, 28, 29, 34, 58, 68, 89, 116, 119, 178, 203, 238, 289, 356, 406, 476, 493, 578, 623, 812, 986, 1156, 1246, 1513, 1972, 2023, 2492, 2581, 3026, 3451, 4046, 5162, 6052, 6902, 8092, 8381, 10324, 10591, 13804, 16762, 18067, 21182, 25721, 33524, 36134, 42364, 43877, 51442, 58667, 72268, 87754, 102884, 117334, 175508, 180047, 234668, 307139, 360094, 614278, 720188, 745909, 1228556, 1491818, 2983636, 5221363, 10442726, 20885452]

約数ペア:

[(1, 20885452), (2, 10442726), (4, 5221363), (7, 2983636), (14, 1491818), (17, 1228556), (28, 745909), (29, 720188), (34, 614278), (58, 360094), (68, 307139), (89, 234668), (116, 180047), (119, 175508), (178, 117334), (203, 102884), (238, 87754), (289, 72268), (356, 58667), (406, 51442), (476, 43877), (493, 42364), (578, 36134), (623, 33524), (812, 25721), (986, 21182), (1156, 18067), (1246, 16762), (1513, 13804), (1972, 10591), (2023, 10324), (2492, 8381), (2581, 8092), (3026, 6902), (3451, 6052), (4046, 5162)]