128823940

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:330

約数の個数: 96

約数和(自身を含む): 320544000

約数和(自身を除く): 191720060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 89, 98, 140, 178, 196, 211, 245, 343, 356, 422, 445, 490, 623, 686, 844, 890, 980, 1055, 1246, 1372, 1477, 1715, 1780, 2110, 2492, 2954, 3115, 3430, 4220, 4361, 5908, 6230, 6860, 7385, 8722, 10339, 12460, 14770, 17444, 18779, 20678, 21805, 29540, 30527, 37558, 41356, 43610, 51695, 61054, 72373, 75116, 87220, 93895, 103390, 122108, 131453, 144746, 152635, 187790, 206780, 262906, 289492, 305270, 361865, 375580, 525812, 610540, 657265, 723730, 920171, 1314530, 1447460, 1840342, 2629060, 3680684, 4600855, 6441197, 9201710, 12882394, 18403420, 25764788, 32205985, 64411970, 128823940]

約数ペア:

[(1, 128823940), (2, 64411970), (4, 32205985), (5, 25764788), (7, 18403420), (10, 12882394), (14, 9201710), (20, 6441197), (28, 4600855), (35, 3680684), (49, 2629060), (70, 1840342), (89, 1447460), (98, 1314530), (140, 920171), (178, 723730), (196, 657265), (211, 610540), (245, 525812), (343, 375580), (356, 361865), (422, 305270), (445, 289492), (490, 262906), (623, 206780), (686, 187790), (844, 152635), (890, 144746), (980, 131453), (1055, 122108), (1246, 103390), (1372, 93895), (1477, 87220), (1715, 75116), (1780, 72373), (2110, 61054), (2492, 51695), (2954, 43610), (3115, 41356), (3430, 37558), (4220, 30527), (4361, 29540), (5908, 21805), (6230, 20678), (6860, 18779), (7385, 17444), (8722, 14770), (10339, 12460)]