157985920

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7963}}^1$

素因数の和:8013

約数の個数: 64

約数和(自身を含む): 389917440

約数和(自身を除く): 231931520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 7963, 9920, 15926, 19840, 31852, 39815, 63704, 79630, 127408, 159260, 246853, 254816, 318520, 493706, 509632, 637040, 987412, 1019264, 1234265, 1274080, 1974824, 2468530, 2548160, 3949648, 4937060, 5096320, 7899296, 9874120, 15798592, 19748240, 31597184, 39496480, 78992960, 157985920]

約数ペア:

[(1, 157985920), (2, 78992960), (4, 39496480), (5, 31597184), (8, 19748240), (10, 15798592), (16, 9874120), (20, 7899296), (31, 5096320), (32, 4937060), (40, 3949648), (62, 2548160), (64, 2468530), (80, 1974824), (124, 1274080), (128, 1234265), (155, 1019264), (160, 987412), (248, 637040), (310, 509632), (320, 493706), (496, 318520), (620, 254816), (640, 246853), (992, 159260), (1240, 127408), (1984, 79630), (2480, 63704), (3968, 39815), (4960, 31852), (7963, 19840), (9920, 15926)]