20474020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:257

約数の個数: 96

約数和(自身を含む): 53222400

約数和(自身を除く): 32748380

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 43, 70, 76, 86, 95, 133, 140, 172, 179, 190, 215, 266, 301, 358, 380, 430, 532, 602, 665, 716, 817, 860, 895, 1204, 1253, 1330, 1505, 1634, 1790, 2506, 2660, 3010, 3268, 3401, 3580, 4085, 5012, 5719, 6020, 6265, 6802, 7697, 8170, 11438, 12530, 13604, 15394, 16340, 17005, 22876, 23807, 25060, 28595, 30788, 34010, 38485, 47614, 53879, 57190, 68020, 76970, 95228, 107758, 114380, 119035, 146243, 153940, 215516, 238070, 269395, 292486, 476140, 538790, 584972, 731215, 1023701, 1077580, 1462430, 2047402, 2924860, 4094804, 5118505, 10237010, 20474020]

約数ペア:

[(1, 20474020), (2, 10237010), (4, 5118505), (5, 4094804), (7, 2924860), (10, 2047402), (14, 1462430), (19, 1077580), (20, 1023701), (28, 731215), (35, 584972), (38, 538790), (43, 476140), (70, 292486), (76, 269395), (86, 238070), (95, 215516), (133, 153940), (140, 146243), (172, 119035), (179, 114380), (190, 107758), (215, 95228), (266, 76970), (301, 68020), (358, 57190), (380, 53879), (430, 47614), (532, 38485), (602, 34010), (665, 30788), (716, 28595), (817, 25060), (860, 23807), (895, 22876), (1204, 17005), (1253, 16340), (1330, 15394), (1505, 13604), (1634, 12530), (1790, 11438), (2506, 8170), (2660, 7697), (3010, 6802), (3268, 6265), (3401, 6020), (3580, 5719), (4085, 5012)]