20508410

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^3\times {\mathrm{23}}^1$

素因数の和:100

約数の個数: 64

約数和(自身を含む): 43787520

約数和(自身を除く): 23279110

約数列:

[1, 2, 5, 10, 13, 19, 23, 26, 38, 46, 65, 95, 115, 130, 190, 230, 247, 299, 361, 437, 494, 598, 722, 874, 1235, 1495, 1805, 2185, 2470, 2990, 3610, 4370, 4693, 5681, 6859, 8303, 9386, 11362, 13718, 16606, 23465, 28405, 34295, 41515, 46930, 56810, 68590, 83030, 89167, 107939, 157757, 178334, 215878, 315514, 445835, 539695, 788785, 891670, 1079390, 1577570, 2050841, 4101682, 10254205, 20508410]

約数ペア:

[(1, 20508410), (2, 10254205), (5, 4101682), (10, 2050841), (13, 1577570), (19, 1079390), (23, 891670), (26, 788785), (38, 539695), (46, 445835), (65, 315514), (95, 215878), (115, 178334), (130, 157757), (190, 107939), (230, 89167), (247, 83030), (299, 68590), (361, 56810), (437, 46930), (494, 41515), (598, 34295), (722, 28405), (874, 23465), (1235, 16606), (1495, 13718), (1805, 11362), (2185, 9386), (2470, 8303), (2990, 6859), (3610, 5681), (4370, 4693)]