20164578460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{6389}}^1$

素因数の和:6671

約数の個数: 96

約数和(自身を含む): 46590768000

約数和(自身を除く): 26426189540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 199, 244, 260, 305, 398, 610, 793, 796, 995, 1220, 1586, 1990, 2587, 3172, 3965, 3980, 5174, 6389, 7930, 10348, 12139, 12778, 12935, 15860, 24278, 25556, 25870, 31945, 48556, 51740, 60695, 63890, 83057, 121390, 127780, 157807, 166114, 242780, 315614, 332228, 389729, 415285, 631228, 779458, 789035, 830570, 1271411, 1558916, 1578070, 1661140, 1948645, 2542822, 3156140, 3897290, 5066477, 5085644, 6357055, 7794580, 10132954, 12714110, 16528343, 20265908, 25332385, 25428220, 33056686, 50664770, 66113372, 77556071, 82641715, 101329540, 155112142, 165283430, 310224284, 330566860, 387780355, 775560710, 1008228923, 1551121420, 2016457846, 4032915692, 5041144615, 10082289230, 20164578460]

約数ペア:

[(1, 20164578460), (2, 10082289230), (4, 5041144615), (5, 4032915692), (10, 2016457846), (13, 1551121420), (20, 1008228923), (26, 775560710), (52, 387780355), (61, 330566860), (65, 310224284), (122, 165283430), (130, 155112142), (199, 101329540), (244, 82641715), (260, 77556071), (305, 66113372), (398, 50664770), (610, 33056686), (793, 25428220), (796, 25332385), (995, 20265908), (1220, 16528343), (1586, 12714110), (1990, 10132954), (2587, 7794580), (3172, 6357055), (3965, 5085644), (3980, 5066477), (5174, 3897290), (6389, 3156140), (7930, 2542822), (10348, 1948645), (12139, 1661140), (12778, 1578070), (12935, 1558916), (15860, 1271411), (24278, 830570), (25556, 789035), (25870, 779458), (31945, 631228), (48556, 415285), (51740, 389729), (60695, 332228), (63890, 315614), (83057, 242780), (121390, 166114), (127780, 157807)]