81849872

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:328

約数の個数: 80

約数和(自身を含む): 182280000

約数和(自身を除く): 100430128

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 139, 149, 152, 208, 247, 278, 298, 304, 494, 556, 596, 988, 1112, 1192, 1807, 1937, 1976, 2224, 2384, 2641, 2831, 3614, 3874, 3952, 5282, 5662, 7228, 7748, 10564, 11324, 14456, 15496, 20711, 21128, 22648, 28912, 30992, 34333, 36803, 41422, 42256, 45296, 68666, 73606, 82844, 137332, 147212, 165688, 269243, 274664, 294424, 331376, 393509, 538486, 549328, 588848, 787018, 1076972, 1574036, 2153944, 3148072, 4307888, 5115617, 6296144, 10231234, 20462468, 40924936, 81849872]

約数ペア:

[(1, 81849872), (2, 40924936), (4, 20462468), (8, 10231234), (13, 6296144), (16, 5115617), (19, 4307888), (26, 3148072), (38, 2153944), (52, 1574036), (76, 1076972), (104, 787018), (139, 588848), (149, 549328), (152, 538486), (208, 393509), (247, 331376), (278, 294424), (298, 274664), (304, 269243), (494, 165688), (556, 147212), (596, 137332), (988, 82844), (1112, 73606), (1192, 68666), (1807, 45296), (1937, 42256), (1976, 41422), (2224, 36803), (2384, 34333), (2641, 30992), (2831, 28912), (3614, 22648), (3874, 21128), (3952, 20711), (5282, 15496), (5662, 14456), (7228, 11324), (7748, 10564)]