256817392

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{39829}}^1$

素因数の和:39881

約数の個数: 40

約数和(自身を含む): 553159040

約数和(自身を除く): 296341648

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 6448, 39829, 79658, 159316, 318632, 517777, 637264, 1035554, 1234699, 2071108, 2469398, 4142216, 4938796, 8284432, 9877592, 16051087, 19755184, 32102174, 64204348, 128408696, 256817392]

約数ペア:

[(1, 256817392), (2, 128408696), (4, 64204348), (8, 32102174), (13, 19755184), (16, 16051087), (26, 9877592), (31, 8284432), (52, 4938796), (62, 4142216), (104, 2469398), (124, 2071108), (208, 1234699), (248, 1035554), (403, 637264), (496, 517777), (806, 318632), (1612, 159316), (3224, 79658), (6448, 39829)]