20876638520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{579263}}^1$

素因数の和:579344

約数の個数: 64

約数和(自身を含む): 50674014720

約数和(自身を除く): 29797376200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 53, 68, 85, 106, 136, 170, 212, 265, 340, 424, 530, 680, 901, 1060, 1802, 2120, 3604, 4505, 7208, 9010, 18020, 36040, 579263, 1158526, 2317052, 2896315, 4634104, 5792630, 9847471, 11585260, 19694942, 23170520, 30700939, 39389884, 49237355, 61401878, 78779768, 98474710, 122803756, 153504695, 196949420, 245607512, 307009390, 393898840, 521915963, 614018780, 1043831926, 1228037560, 2087663852, 2609579815, 4175327704, 5219159630, 10438319260, 20876638520]

約数ペア:

[(1, 20876638520), (2, 10438319260), (4, 5219159630), (5, 4175327704), (8, 2609579815), (10, 2087663852), (17, 1228037560), (20, 1043831926), (34, 614018780), (40, 521915963), (53, 393898840), (68, 307009390), (85, 245607512), (106, 196949420), (136, 153504695), (170, 122803756), (212, 98474710), (265, 78779768), (340, 61401878), (424, 49237355), (530, 39389884), (680, 30700939), (901, 23170520), (1060, 19694942), (1802, 11585260), (2120, 9847471), (3604, 5792630), (4505, 4634104), (7208, 2896315), (9010, 2317052), (18020, 1158526), (36040, 579263)]