21119440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{293}}^1$

素因数の和:376

約数の個数: 80

約数和(自身を含む): 53152848

約数和(自身を除く): 32033408

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 53, 68, 80, 85, 106, 136, 170, 212, 265, 272, 293, 340, 424, 530, 586, 680, 848, 901, 1060, 1172, 1360, 1465, 1802, 2120, 2344, 2930, 3604, 4240, 4505, 4688, 4981, 5860, 7208, 9010, 9962, 11720, 14416, 15529, 18020, 19924, 23440, 24905, 31058, 36040, 39848, 49810, 62116, 72080, 77645, 79696, 99620, 124232, 155290, 199240, 248464, 263993, 310580, 398480, 527986, 621160, 1055972, 1242320, 1319965, 2111944, 2639930, 4223888, 5279860, 10559720, 21119440]

約数ペア:

[(1, 21119440), (2, 10559720), (4, 5279860), (5, 4223888), (8, 2639930), (10, 2111944), (16, 1319965), (17, 1242320), (20, 1055972), (34, 621160), (40, 527986), (53, 398480), (68, 310580), (80, 263993), (85, 248464), (106, 199240), (136, 155290), (170, 124232), (212, 99620), (265, 79696), (272, 77645), (293, 72080), (340, 62116), (424, 49810), (530, 39848), (586, 36040), (680, 31058), (848, 24905), (901, 23440), (1060, 19924), (1172, 18020), (1360, 15529), (1465, 14416), (1802, 11720), (2120, 9962), (2344, 9010), (2930, 7208), (3604, 5860), (4240, 4981), (4505, 4688)]