21894275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:176

約数の個数: 48

約数和(自身を含む): 31872960

約数和(自身を除く): 9978685

約数列:

[1, 5, 13, 23, 25, 29, 65, 101, 115, 145, 299, 325, 377, 505, 575, 667, 725, 1313, 1495, 1885, 2323, 2525, 2929, 3335, 6565, 7475, 8671, 9425, 11615, 14645, 16675, 30199, 32825, 38077, 43355, 58075, 67367, 73225, 150995, 190385, 216775, 336835, 754975, 875771, 951925, 1684175, 4378855, 21894275]

約数ペア:

[(1, 21894275), (5, 4378855), (13, 1684175), (23, 951925), (25, 875771), (29, 754975), (65, 336835), (101, 216775), (115, 190385), (145, 150995), (299, 73225), (325, 67367), (377, 58075), (505, 43355), (575, 38077), (667, 32825), (725, 30199), (1313, 16675), (1495, 14645), (1885, 11615), (2323, 9425), (2525, 8671), (2929, 7475), (3335, 6565)]