19793840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{271}}^1$

素因数の和:378

約数の個数: 80

約数和(自身を含む): 50996736

約数和(自身を除く): 31202896

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 83, 88, 110, 166, 176, 220, 271, 332, 415, 440, 542, 664, 830, 880, 913, 1084, 1328, 1355, 1660, 1826, 2168, 2710, 2981, 3320, 3652, 4336, 4565, 5420, 5962, 6640, 7304, 9130, 10840, 11924, 14608, 14905, 18260, 21680, 22493, 23848, 29810, 36520, 44986, 47696, 59620, 73040, 89972, 112465, 119240, 179944, 224930, 238480, 247423, 359888, 449860, 494846, 899720, 989692, 1237115, 1799440, 1979384, 2474230, 3958768, 4948460, 9896920, 19793840]

約数ペア:

[(1, 19793840), (2, 9896920), (4, 4948460), (5, 3958768), (8, 2474230), (10, 1979384), (11, 1799440), (16, 1237115), (20, 989692), (22, 899720), (40, 494846), (44, 449860), (55, 359888), (80, 247423), (83, 238480), (88, 224930), (110, 179944), (166, 119240), (176, 112465), (220, 89972), (271, 73040), (332, 59620), (415, 47696), (440, 44986), (542, 36520), (664, 29810), (830, 23848), (880, 22493), (913, 21680), (1084, 18260), (1328, 14905), (1355, 14608), (1660, 11924), (1826, 10840), (2168, 9130), (2710, 7304), (2981, 6640), (3320, 5962), (3652, 5420), (4336, 4565)]