81876080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{421}}^1$

素因数の和:475

約数の個数: 160

約数和(自身を含む): 237359808

約数和(自身を除く): 155483728

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 17, 20, 22, 26, 34, 40, 44, 52, 55, 65, 68, 80, 85, 88, 104, 110, 130, 136, 143, 170, 176, 187, 208, 220, 221, 260, 272, 286, 340, 374, 421, 440, 442, 520, 572, 680, 715, 748, 842, 880, 884, 935, 1040, 1105, 1144, 1360, 1430, 1496, 1684, 1768, 1870, 2105, 2210, 2288, 2431, 2860, 2992, 3368, 3536, 3740, 4210, 4420, 4631, 4862, 5473, 5720, 6736, 7157, 7480, 8420, 8840, 9262, 9724, 10946, 11440, 12155, 14314, 14960, 16840, 17680, 18524, 19448, 21892, 23155, 24310, 27365, 28628, 33680, 35785, 37048, 38896, 43784, 46310, 48620, 54730, 57256, 60203, 71570, 74096, 78727, 87568, 92620, 93041, 97240, 109460, 114512, 120406, 143140, 157454, 185240, 186082, 194480, 218920, 240812, 286280, 301015, 314908, 370480, 372164, 393635, 437840, 465205, 481624, 572560, 602030, 629816, 744328, 787270, 930410, 963248, 1023451, 1204060, 1259632, 1488656, 1574540, 1860820, 2046902, 2408120, 3149080, 3721640, 4093804, 4816240, 5117255, 6298160, 7443280, 8187608, 10234510, 16375216, 20469020, 40938040, 81876080]

約数ペア:

[(1, 81876080), (2, 40938040), (4, 20469020), (5, 16375216), (8, 10234510), (10, 8187608), (11, 7443280), (13, 6298160), (16, 5117255), (17, 4816240), (20, 4093804), (22, 3721640), (26, 3149080), (34, 2408120), (40, 2046902), (44, 1860820), (52, 1574540), (55, 1488656), (65, 1259632), (68, 1204060), (80, 1023451), (85, 963248), (88, 930410), (104, 787270), (110, 744328), (130, 629816), (136, 602030), (143, 572560), (170, 481624), (176, 465205), (187, 437840), (208, 393635), (220, 372164), (221, 370480), (260, 314908), (272, 301015), (286, 286280), (340, 240812), (374, 218920), (421, 194480), (440, 186082), (442, 185240), (520, 157454), (572, 143140), (680, 120406), (715, 114512), (748, 109460), (842, 97240), (880, 93041), (884, 92620), (935, 87568), (1040, 78727), (1105, 74096), (1144, 71570), (1360, 60203), (1430, 57256), (1496, 54730), (1684, 48620), (1768, 46310), (1870, 43784), (2105, 38896), (2210, 37048), (2288, 35785), (2431, 33680), (2860, 28628), (2992, 27365), (3368, 24310), (3536, 23155), (3740, 21892), (4210, 19448), (4420, 18524), (4631, 17680), (4862, 16840), (5473, 14960), (5720, 14314), (6736, 12155), (7157, 11440), (7480, 10946), (8420, 9724), (8840, 9262)]