20708947120

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1321}}^1\times {\mathrm{11527}}^1$

素因数の和:12878

約数の個数: 80

約数和(自身を含む): 51023573568

約数和(自身を除く): 30314626448

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1321, 1360, 2642, 5284, 6605, 10568, 11527, 13210, 21136, 22457, 23054, 26420, 44914, 46108, 52840, 57635, 89828, 92216, 105680, 112285, 115270, 179656, 184432, 195959, 224570, 230540, 359312, 391918, 449140, 461080, 783836, 898280, 922160, 979795, 1567672, 1796560, 1959590, 3135344, 3919180, 7838360, 15227167, 15676720, 30454334, 60908668, 76135835, 121817336, 152271670, 243634672, 258861839, 304543340, 517723678, 609086680, 1035447356, 1218173360, 1294309195, 2070894712, 2588618390, 4141789424, 5177236780, 10354473560, 20708947120]

約数ペア:

[(1, 20708947120), (2, 10354473560), (4, 5177236780), (5, 4141789424), (8, 2588618390), (10, 2070894712), (16, 1294309195), (17, 1218173360), (20, 1035447356), (34, 609086680), (40, 517723678), (68, 304543340), (80, 258861839), (85, 243634672), (136, 152271670), (170, 121817336), (272, 76135835), (340, 60908668), (680, 30454334), (1321, 15676720), (1360, 15227167), (2642, 7838360), (5284, 3919180), (6605, 3135344), (10568, 1959590), (11527, 1796560), (13210, 1567672), (21136, 979795), (22457, 922160), (23054, 898280), (26420, 783836), (44914, 461080), (46108, 449140), (52840, 391918), (57635, 359312), (89828, 230540), (92216, 224570), (105680, 195959), (112285, 184432), (115270, 179656)]