256843184

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{653}}^1$

素因数の和:766

約数の個数: 80

約数和(自身を含む): 563130624

約数和(自身を除く): 306287440

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 61, 62, 104, 122, 124, 208, 244, 248, 403, 488, 496, 653, 793, 806, 976, 1306, 1586, 1612, 1891, 2612, 3172, 3224, 3782, 5224, 6344, 6448, 7564, 8489, 10448, 12688, 15128, 16978, 20243, 24583, 30256, 33956, 39833, 40486, 49166, 67912, 79666, 80972, 98332, 135824, 159332, 161944, 196664, 263159, 318664, 323888, 393328, 517829, 526318, 637328, 1035658, 1052636, 1234823, 2071316, 2105272, 2469646, 4142632, 4210544, 4939292, 8285264, 9878584, 16052699, 19757168, 32105398, 64210796, 128421592, 256843184]

約数ペア:

[(1, 256843184), (2, 128421592), (4, 64210796), (8, 32105398), (13, 19757168), (16, 16052699), (26, 9878584), (31, 8285264), (52, 4939292), (61, 4210544), (62, 4142632), (104, 2469646), (122, 2105272), (124, 2071316), (208, 1234823), (244, 1052636), (248, 1035658), (403, 637328), (488, 526318), (496, 517829), (653, 393328), (793, 323888), (806, 318664), (976, 263159), (1306, 196664), (1586, 161944), (1612, 159332), (1891, 135824), (2612, 98332), (3172, 80972), (3224, 79666), (3782, 67912), (5224, 49166), (6344, 40486), (6448, 39833), (7564, 33956), (8489, 30256), (10448, 24583), (12688, 20243), (15128, 16978)]