21903310

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1$

素因数の和:118

約数の個数: 96

約数和(自身を含む): 50131872

約数和(自身を除く): 28228562

約数列:

[1, 2, 5, 10, 11, 13, 17, 22, 26, 34, 53, 55, 65, 85, 106, 110, 130, 143, 170, 187, 221, 265, 286, 289, 374, 442, 530, 578, 583, 689, 715, 901, 935, 1105, 1166, 1378, 1430, 1445, 1802, 1870, 2210, 2431, 2890, 2915, 3179, 3445, 3757, 4505, 4862, 5830, 6358, 6890, 7514, 7579, 9010, 9911, 11713, 12155, 15158, 15317, 15895, 18785, 19822, 23426, 24310, 30634, 31790, 37570, 37895, 41327, 49555, 58565, 75790, 76585, 82654, 99110, 117130, 128843, 153170, 168487, 199121, 206635, 257686, 336974, 398242, 413270, 644215, 842435, 995605, 1288430, 1684870, 1991210, 2190331, 4380662, 10951655, 21903310]

約数ペア:

[(1, 21903310), (2, 10951655), (5, 4380662), (10, 2190331), (11, 1991210), (13, 1684870), (17, 1288430), (22, 995605), (26, 842435), (34, 644215), (53, 413270), (55, 398242), (65, 336974), (85, 257686), (106, 206635), (110, 199121), (130, 168487), (143, 153170), (170, 128843), (187, 117130), (221, 99110), (265, 82654), (286, 76585), (289, 75790), (374, 58565), (442, 49555), (530, 41327), (578, 37895), (583, 37570), (689, 31790), (715, 30634), (901, 24310), (935, 23426), (1105, 19822), (1166, 18785), (1378, 15895), (1430, 15317), (1445, 15158), (1802, 12155), (1870, 11713), (2210, 9911), (2431, 9010), (2890, 7579), (2915, 7514), (3179, 6890), (3445, 6358), (3757, 5830), (4505, 4862)]