28342490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 59719680

約数和(自身を除く): 31377190

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 71, 95, 110, 142, 190, 191, 209, 355, 382, 418, 710, 781, 955, 1045, 1349, 1562, 1910, 2090, 2101, 2698, 3629, 3905, 4202, 6745, 7258, 7810, 10505, 13490, 13561, 14839, 18145, 21010, 27122, 29678, 36290, 39919, 67805, 74195, 79838, 135610, 148390, 149171, 199595, 257659, 298342, 399190, 515318, 745855, 1288295, 1491710, 2576590, 2834249, 5668498, 14171245, 28342490]

約数ペア:

[(1, 28342490), (2, 14171245), (5, 5668498), (10, 2834249), (11, 2576590), (19, 1491710), (22, 1288295), (38, 745855), (55, 515318), (71, 399190), (95, 298342), (110, 257659), (142, 199595), (190, 149171), (191, 148390), (209, 135610), (355, 79838), (382, 74195), (418, 67805), (710, 39919), (781, 36290), (955, 29678), (1045, 27122), (1349, 21010), (1562, 18145), (1910, 14839), (2090, 13561), (2101, 13490), (2698, 10505), (3629, 7810), (3905, 7258), (4202, 6745)]