20199415660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{109}}^1\times {\mathrm{25667}}^1$

素因数の和:25823

約数の個数: 72

約数和(自身を含む): 45181326960

約数和(自身を除く): 24981911300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 361, 380, 436, 545, 722, 1090, 1444, 1805, 2071, 2180, 3610, 4142, 7220, 8284, 10355, 20710, 25667, 39349, 41420, 51334, 78698, 102668, 128335, 157396, 196745, 256670, 393490, 487673, 513340, 786980, 975346, 1950692, 2438365, 2797703, 4876730, 5595406, 9265787, 9753460, 11190812, 13988515, 18531574, 27977030, 37063148, 46328935, 53156357, 55954060, 92657870, 106312714, 185315740, 212625428, 265781785, 531563570, 1009970783, 1063127140, 2019941566, 4039883132, 5049853915, 10099707830, 20199415660]

約数ペア:

[(1, 20199415660), (2, 10099707830), (4, 5049853915), (5, 4039883132), (10, 2019941566), (19, 1063127140), (20, 1009970783), (38, 531563570), (76, 265781785), (95, 212625428), (109, 185315740), (190, 106312714), (218, 92657870), (361, 55954060), (380, 53156357), (436, 46328935), (545, 37063148), (722, 27977030), (1090, 18531574), (1444, 13988515), (1805, 11190812), (2071, 9753460), (2180, 9265787), (3610, 5595406), (4142, 4876730), (7220, 2797703), (8284, 2438365), (10355, 1950692), (20710, 975346), (25667, 786980), (39349, 513340), (41420, 487673), (51334, 393490), (78698, 256670), (102668, 196745), (128335, 157396)]