20469020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{421}}^1$

素因数の和:471

約数の個数: 96

約数和(自身を含む): 53597376

約数和(自身を除く): 33128356

約数列:

[1, 2, 4, 5, 10, 11, 13, 17, 20, 22, 26, 34, 44, 52, 55, 65, 68, 85, 110, 130, 143, 170, 187, 220, 221, 260, 286, 340, 374, 421, 442, 572, 715, 748, 842, 884, 935, 1105, 1430, 1684, 1870, 2105, 2210, 2431, 2860, 3740, 4210, 4420, 4631, 4862, 5473, 7157, 8420, 9262, 9724, 10946, 12155, 14314, 18524, 21892, 23155, 24310, 27365, 28628, 35785, 46310, 48620, 54730, 60203, 71570, 78727, 92620, 93041, 109460, 120406, 143140, 157454, 186082, 240812, 301015, 314908, 372164, 393635, 465205, 602030, 787270, 930410, 1023451, 1204060, 1574540, 1860820, 2046902, 4093804, 5117255, 10234510, 20469020]

約数ペア:

[(1, 20469020), (2, 10234510), (4, 5117255), (5, 4093804), (10, 2046902), (11, 1860820), (13, 1574540), (17, 1204060), (20, 1023451), (22, 930410), (26, 787270), (34, 602030), (44, 465205), (52, 393635), (55, 372164), (65, 314908), (68, 301015), (85, 240812), (110, 186082), (130, 157454), (143, 143140), (170, 120406), (187, 109460), (220, 93041), (221, 92620), (260, 78727), (286, 71570), (340, 60203), (374, 54730), (421, 48620), (442, 46310), (572, 35785), (715, 28628), (748, 27365), (842, 24310), (884, 23155), (935, 21892), (1105, 18524), (1430, 14314), (1684, 12155), (1870, 10946), (2105, 9724), (2210, 9262), (2431, 8420), (2860, 7157), (3740, 5473), (4210, 4862), (4420, 4631)]