72455140

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:604

約数の個数: 48

約数和(自身を含む): 155937600

約数和(自身を除く): 83482460

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 139, 268, 278, 335, 389, 556, 670, 695, 778, 1340, 1390, 1556, 1945, 2780, 3890, 7780, 9313, 18626, 26063, 37252, 46565, 52126, 54071, 93130, 104252, 108142, 130315, 186260, 216284, 260630, 270355, 521260, 540710, 1081420, 3622757, 7245514, 14491028, 18113785, 36227570, 72455140]

約数ペア:

[(1, 72455140), (2, 36227570), (4, 18113785), (5, 14491028), (10, 7245514), (20, 3622757), (67, 1081420), (134, 540710), (139, 521260), (268, 270355), (278, 260630), (335, 216284), (389, 186260), (556, 130315), (670, 108142), (695, 104252), (778, 93130), (1340, 54071), (1390, 52126), (1556, 46565), (1945, 37252), (2780, 26063), (3890, 18626), (7780, 9313)]