19962080

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:252

約数の個数: 96

約数和(自身を含む): 51438240

約数和(自身を除く): 31476160

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 41, 68, 80, 82, 85, 136, 160, 164, 170, 179, 205, 272, 328, 340, 358, 410, 544, 656, 680, 697, 716, 820, 895, 1312, 1360, 1394, 1432, 1640, 1790, 2720, 2788, 2864, 3043, 3280, 3485, 3580, 5576, 5728, 6086, 6560, 6970, 7160, 7339, 11152, 12172, 13940, 14320, 14678, 15215, 22304, 24344, 27880, 28640, 29356, 30430, 36695, 48688, 55760, 58712, 60860, 73390, 97376, 111520, 117424, 121720, 124763, 146780, 234848, 243440, 249526, 293560, 486880, 499052, 587120, 623815, 998104, 1174240, 1247630, 1996208, 2495260, 3992416, 4990520, 9981040, 19962080]

約数ペア:

[(1, 19962080), (2, 9981040), (4, 4990520), (5, 3992416), (8, 2495260), (10, 1996208), (16, 1247630), (17, 1174240), (20, 998104), (32, 623815), (34, 587120), (40, 499052), (41, 486880), (68, 293560), (80, 249526), (82, 243440), (85, 234848), (136, 146780), (160, 124763), (164, 121720), (170, 117424), (179, 111520), (205, 97376), (272, 73390), (328, 60860), (340, 58712), (358, 55760), (410, 48688), (544, 36695), (656, 30430), (680, 29356), (697, 28640), (716, 27880), (820, 24344), (895, 22304), (1312, 15215), (1360, 14678), (1394, 14320), (1432, 13940), (1640, 12172), (1790, 11152), (2720, 7339), (2788, 7160), (2864, 6970), (3043, 6560), (3280, 6086), (3485, 5728), (3580, 5576)]