25381120

素因数分解:

$2^8\times 5^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:351

約数の個数: 72

約数和(自身を含む): 61810560

約数和(自身を除く): 36429440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 251, 256, 316, 320, 395, 502, 632, 640, 790, 1004, 1255, 1264, 1280, 1580, 2008, 2510, 2528, 3160, 4016, 5020, 5056, 6320, 8032, 10040, 10112, 12640, 16064, 19829, 20080, 20224, 25280, 32128, 39658, 40160, 50560, 64256, 79316, 80320, 99145, 101120, 158632, 160640, 198290, 317264, 321280, 396580, 634528, 793160, 1269056, 1586320, 2538112, 3172640, 5076224, 6345280, 12690560, 25381120]

約数ペア:

[(1, 25381120), (2, 12690560), (4, 6345280), (5, 5076224), (8, 3172640), (10, 2538112), (16, 1586320), (20, 1269056), (32, 793160), (40, 634528), (64, 396580), (79, 321280), (80, 317264), (128, 198290), (158, 160640), (160, 158632), (251, 101120), (256, 99145), (316, 80320), (320, 79316), (395, 64256), (502, 50560), (632, 40160), (640, 39658), (790, 32128), (1004, 25280), (1255, 20224), (1264, 20080), (1280, 19829), (1580, 16064), (2008, 12640), (2510, 10112), (2528, 10040), (3160, 8032), (4016, 6320), (5020, 5056)]