161784280

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{197}}^1\times {\mathrm{419}}^1$

素因数の和:641

約数の個数: 96

約数和(自身を含む): 426610800

約数和(自身を除く): 264826520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 197, 245, 280, 392, 394, 419, 490, 788, 838, 980, 985, 1379, 1576, 1676, 1960, 1970, 2095, 2758, 2933, 3352, 3940, 4190, 5516, 5866, 6895, 7880, 8380, 9653, 11032, 11732, 13790, 14665, 16760, 19306, 20531, 23464, 27580, 29330, 38612, 41062, 48265, 55160, 58660, 77224, 82124, 82543, 96530, 102655, 117320, 164248, 165086, 193060, 205310, 330172, 386120, 410620, 412715, 577801, 660344, 821240, 825430, 1155602, 1650860, 2311204, 2889005, 3301720, 4044607, 4622408, 5778010, 8089214, 11556020, 16178428, 20223035, 23112040, 32356856, 40446070, 80892140, 161784280]

約数ペア:

[(1, 161784280), (2, 80892140), (4, 40446070), (5, 32356856), (7, 23112040), (8, 20223035), (10, 16178428), (14, 11556020), (20, 8089214), (28, 5778010), (35, 4622408), (40, 4044607), (49, 3301720), (56, 2889005), (70, 2311204), (98, 1650860), (140, 1155602), (196, 825430), (197, 821240), (245, 660344), (280, 577801), (392, 412715), (394, 410620), (419, 386120), (490, 330172), (788, 205310), (838, 193060), (980, 165086), (985, 164248), (1379, 117320), (1576, 102655), (1676, 96530), (1960, 82543), (1970, 82124), (2095, 77224), (2758, 58660), (2933, 55160), (3352, 48265), (3940, 41062), (4190, 38612), (5516, 29330), (5866, 27580), (6895, 23464), (7880, 20531), (8380, 19306), (9653, 16760), (11032, 14665), (11732, 13790)]