19927440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2129}}^1$

素因数の和:2161

約数の個数: 120

約数和(自身を含む): 72104760

約数和(自身を除く): 52177320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 180, 195, 208, 234, 240, 260, 312, 360, 390, 468, 520, 585, 624, 720, 780, 936, 1040, 1170, 1560, 1872, 2129, 2340, 3120, 4258, 4680, 6387, 8516, 9360, 10645, 12774, 17032, 19161, 21290, 25548, 27677, 31935, 34064, 38322, 42580, 51096, 55354, 63870, 76644, 83031, 85160, 95805, 102192, 110708, 127740, 138385, 153288, 166062, 170320, 191610, 221416, 249093, 255480, 276770, 306576, 332124, 383220, 415155, 442832, 498186, 510960, 553540, 664248, 766440, 830310, 996372, 1107080, 1245465, 1328496, 1532880, 1660620, 1992744, 2214160, 2490930, 3321240, 3985488, 4981860, 6642480, 9963720, 19927440]

約数ペア:

[(1, 19927440), (2, 9963720), (3, 6642480), (4, 4981860), (5, 3985488), (6, 3321240), (8, 2490930), (9, 2214160), (10, 1992744), (12, 1660620), (13, 1532880), (15, 1328496), (16, 1245465), (18, 1107080), (20, 996372), (24, 830310), (26, 766440), (30, 664248), (36, 553540), (39, 510960), (40, 498186), (45, 442832), (48, 415155), (52, 383220), (60, 332124), (65, 306576), (72, 276770), (78, 255480), (80, 249093), (90, 221416), (104, 191610), (117, 170320), (120, 166062), (130, 153288), (144, 138385), (156, 127740), (180, 110708), (195, 102192), (208, 95805), (234, 85160), (240, 83031), (260, 76644), (312, 63870), (360, 55354), (390, 51096), (468, 42580), (520, 38322), (585, 34064), (624, 31935), (720, 27677), (780, 25548), (936, 21290), (1040, 19161), (1170, 17032), (1560, 12774), (1872, 10645), (2129, 9360), (2340, 8516), (3120, 6387), (4258, 4680)]