251001530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{661}}^1$

素因数の和:831

約数の個数: 64

約数和(自身を含む): 512483328

約数和(自身を除く): 261481798

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 127, 130, 230, 254, 299, 598, 635, 661, 1270, 1322, 1495, 1651, 2921, 2990, 3302, 3305, 5842, 6610, 8255, 8593, 14605, 15203, 16510, 17186, 29210, 30406, 37973, 42965, 75946, 76015, 83947, 85930, 152030, 167894, 189865, 197639, 379730, 395278, 419735, 839470, 988195, 1091311, 1930781, 1976390, 2182622, 3861562, 5456555, 9653905, 10913110, 19307810, 25100153, 50200306, 125500765, 251001530]

約数ペア:

[(1, 251001530), (2, 125500765), (5, 50200306), (10, 25100153), (13, 19307810), (23, 10913110), (26, 9653905), (46, 5456555), (65, 3861562), (115, 2182622), (127, 1976390), (130, 1930781), (230, 1091311), (254, 988195), (299, 839470), (598, 419735), (635, 395278), (661, 379730), (1270, 197639), (1322, 189865), (1495, 167894), (1651, 152030), (2921, 85930), (2990, 83947), (3302, 76015), (3305, 75946), (5842, 42965), (6610, 37973), (8255, 30406), (8593, 29210), (14605, 17186), (15203, 16510)]