388889360

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{181}}^1\times {\mathrm{251}}^1$

素因数の和:552

約数の個数: 80

約数和(自身を含む): 921316032

約数和(自身を除く): 532426672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 181, 214, 251, 362, 428, 502, 535, 724, 856, 905, 1004, 1070, 1255, 1448, 1712, 1810, 2008, 2140, 2510, 2896, 3620, 4016, 4280, 5020, 7240, 8560, 10040, 14480, 19367, 20080, 26857, 38734, 45431, 53714, 77468, 90862, 96835, 107428, 134285, 154936, 181724, 193670, 214856, 227155, 268570, 309872, 363448, 387340, 429712, 454310, 537140, 726896, 774680, 908620, 1074280, 1549360, 1817240, 2148560, 3634480, 4861117, 9722234, 19444468, 24305585, 38888936, 48611170, 77777872, 97222340, 194444680, 388889360]

約数ペア:

[(1, 388889360), (2, 194444680), (4, 97222340), (5, 77777872), (8, 48611170), (10, 38888936), (16, 24305585), (20, 19444468), (40, 9722234), (80, 4861117), (107, 3634480), (181, 2148560), (214, 1817240), (251, 1549360), (362, 1074280), (428, 908620), (502, 774680), (535, 726896), (724, 537140), (856, 454310), (905, 429712), (1004, 387340), (1070, 363448), (1255, 309872), (1448, 268570), (1712, 227155), (1810, 214856), (2008, 193670), (2140, 181724), (2510, 154936), (2896, 134285), (3620, 107428), (4016, 96835), (4280, 90862), (5020, 77468), (7240, 53714), (8560, 45431), (10040, 38734), (14480, 26857), (19367, 20080)]