257890308

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{739}}^1\times {\mathrm{2237}}^1$

素因数の和:2996

約数の個数: 48

約数和(自身を含む): 649199040

約数和(自身を除く): 391308732

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 739, 1478, 2217, 2237, 2956, 4434, 4474, 6711, 8868, 8948, 9607, 13422, 19214, 26844, 28821, 29081, 38428, 57642, 58162, 87243, 115284, 116324, 174486, 348972, 1653143, 3306286, 4959429, 6612572, 9918858, 19837716, 21490859, 42981718, 64472577, 85963436, 128945154, 257890308]

約数ペア:

[(1, 257890308), (2, 128945154), (3, 85963436), (4, 64472577), (6, 42981718), (12, 21490859), (13, 19837716), (26, 9918858), (39, 6612572), (52, 4959429), (78, 3306286), (156, 1653143), (739, 348972), (1478, 174486), (2217, 116324), (2237, 115284), (2956, 87243), (4434, 58162), (4474, 57642), (6711, 38428), (8868, 29081), (8948, 28821), (9607, 26844), (13422, 19214)]