20512355890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{727}}^1\times {\mathrm{751}}^1$

素因数の和:1532

約数の個数: 96

約数和(自身を含む): 42353385984

約数和(自身を除く): 21841030094

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 289, 442, 578, 727, 751, 1105, 1445, 1454, 1502, 2210, 2890, 3635, 3755, 3757, 7270, 7510, 7514, 9451, 9763, 12359, 12767, 18785, 18902, 19526, 24718, 25534, 37570, 47255, 48815, 61795, 63835, 94510, 97630, 123590, 127670, 160667, 165971, 210103, 217039, 321334, 331942, 420206, 434078, 545977, 803335, 829855, 1050515, 1085195, 1091954, 1606670, 1659710, 2101030, 2170390, 2729885, 2731339, 2821507, 5459770, 5462678, 5643014, 7097701, 9281609, 13656695, 14107535, 14195402, 18563218, 27313390, 28215070, 35488505, 46408045, 70977010, 92816090, 120660917, 157787353, 241321834, 315574706, 603304585, 788936765, 1206609170, 1577873530, 2051235589, 4102471178, 10256177945, 20512355890]

約数ペア:

[(1, 20512355890), (2, 10256177945), (5, 4102471178), (10, 2051235589), (13, 1577873530), (17, 1206609170), (26, 788936765), (34, 603304585), (65, 315574706), (85, 241321834), (130, 157787353), (170, 120660917), (221, 92816090), (289, 70977010), (442, 46408045), (578, 35488505), (727, 28215070), (751, 27313390), (1105, 18563218), (1445, 14195402), (1454, 14107535), (1502, 13656695), (2210, 9281609), (2890, 7097701), (3635, 5643014), (3755, 5462678), (3757, 5459770), (7270, 2821507), (7510, 2731339), (7514, 2729885), (9451, 2170390), (9763, 2101030), (12359, 1659710), (12767, 1606670), (18785, 1091954), (18902, 1085195), (19526, 1050515), (24718, 829855), (25534, 803335), (37570, 545977), (47255, 434078), (48815, 420206), (61795, 331942), (63835, 321334), (94510, 217039), (97630, 210103), (123590, 165971), (127670, 160667)]