315971840

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7963}}^1$

素因数の和:8015

約数の個数: 72

約数和(自身を含む): 781363968

約数和(自身を除く): 465392128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 7963, 9920, 15926, 19840, 31852, 39680, 39815, 63704, 79630, 127408, 159260, 246853, 254816, 318520, 493706, 509632, 637040, 987412, 1019264, 1234265, 1274080, 1974824, 2038528, 2468530, 2548160, 3949648, 4937060, 5096320, 7899296, 9874120, 10192640, 15798592, 19748240, 31597184, 39496480, 63194368, 78992960, 157985920, 315971840]

約数ペア:

[(1, 315971840), (2, 157985920), (4, 78992960), (5, 63194368), (8, 39496480), (10, 31597184), (16, 19748240), (20, 15798592), (31, 10192640), (32, 9874120), (40, 7899296), (62, 5096320), (64, 4937060), (80, 3949648), (124, 2548160), (128, 2468530), (155, 2038528), (160, 1974824), (248, 1274080), (256, 1234265), (310, 1019264), (320, 987412), (496, 637040), (620, 509632), (640, 493706), (992, 318520), (1240, 254816), (1280, 246853), (1984, 159260), (2480, 127408), (3968, 79630), (4960, 63704), (7936, 39815), (7963, 39680), (9920, 31852), (15926, 19840)]