20118735

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^3$

素因数の和:82

約数の個数: 96

約数和(自身を含む): 45601920

約数和(自身を除く): 25483185

約数列:

[1, 3, 5, 7, 9, 13, 15, 17, 21, 35, 39, 45, 51, 63, 65, 85, 91, 105, 117, 119, 153, 195, 221, 255, 273, 289, 315, 357, 455, 585, 595, 663, 765, 819, 867, 1071, 1105, 1365, 1445, 1547, 1785, 1989, 2023, 2601, 3315, 3757, 4095, 4335, 4641, 4913, 5355, 6069, 7735, 9945, 10115, 11271, 13005, 13923, 14739, 18207, 18785, 23205, 24565, 26299, 30345, 33813, 34391, 44217, 56355, 63869, 69615, 73695, 78897, 91035, 103173, 131495, 169065, 171955, 191607, 221085, 236691, 309519, 319345, 394485, 447083, 515865, 574821, 958035, 1183455, 1341249, 1547595, 2235415, 2874105, 4023747, 6706245, 20118735]

約数ペア:

[(1, 20118735), (3, 6706245), (5, 4023747), (7, 2874105), (9, 2235415), (13, 1547595), (15, 1341249), (17, 1183455), (21, 958035), (35, 574821), (39, 515865), (45, 447083), (51, 394485), (63, 319345), (65, 309519), (85, 236691), (91, 221085), (105, 191607), (117, 171955), (119, 169065), (153, 131495), (195, 103173), (221, 91035), (255, 78897), (273, 73695), (289, 69615), (315, 63869), (357, 56355), (455, 44217), (585, 34391), (595, 33813), (663, 30345), (765, 26299), (819, 24565), (867, 23205), (1071, 18785), (1105, 18207), (1365, 14739), (1445, 13923), (1547, 13005), (1785, 11271), (1989, 10115), (2023, 9945), (2601, 7735), (3315, 6069), (3757, 5355), (4095, 4913), (4335, 4641)]