20258128

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:176

約数の個数: 80

約数和(自身を含む): 45711360

約数和(自身を除く): 25453232

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 44, 47, 62, 79, 88, 94, 124, 158, 176, 188, 248, 316, 341, 376, 496, 517, 632, 682, 752, 869, 1034, 1264, 1364, 1457, 1738, 2068, 2449, 2728, 2914, 3476, 3713, 4136, 4898, 5456, 5828, 6952, 7426, 8272, 9796, 11656, 13904, 14852, 16027, 19592, 23312, 26939, 29704, 32054, 39184, 40843, 53878, 59408, 64108, 81686, 107756, 115103, 128216, 163372, 215512, 230206, 256432, 326744, 431024, 460412, 653488, 920824, 1266133, 1841648, 2532266, 5064532, 10129064, 20258128]

約数ペア:

[(1, 20258128), (2, 10129064), (4, 5064532), (8, 2532266), (11, 1841648), (16, 1266133), (22, 920824), (31, 653488), (44, 460412), (47, 431024), (62, 326744), (79, 256432), (88, 230206), (94, 215512), (124, 163372), (158, 128216), (176, 115103), (188, 107756), (248, 81686), (316, 64108), (341, 59408), (376, 53878), (496, 40843), (517, 39184), (632, 32054), (682, 29704), (752, 26939), (869, 23312), (1034, 19592), (1264, 16027), (1364, 14852), (1457, 13904), (1738, 11656), (2068, 9796), (2449, 8272), (2728, 7426), (2914, 6952), (3476, 5828), (3713, 5456), (4136, 4898)]