20899291280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{2383}}^1\times {\mathrm{15661}}^1$

素因数の和:18064

約数の個数: 80

約数和(自身を含む): 55559253504

約数和(自身を除く): 34659962224

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 2383, 4766, 9532, 11915, 15661, 16681, 19064, 23830, 31322, 33362, 38128, 47660, 62644, 66724, 78305, 83405, 95320, 109627, 125288, 133448, 156610, 166810, 190640, 219254, 250576, 266896, 313220, 333620, 438508, 548135, 626440, 667240, 877016, 1096270, 1252880, 1334480, 1754032, 2192540, 4385080, 8770160, 37320163, 74640326, 149280652, 186600815, 261241141, 298561304, 373201630, 522482282, 597122608, 746403260, 1044964564, 1306205705, 1492806520, 2089929128, 2612411410, 2985613040, 4179858256, 5224822820, 10449645640, 20899291280]

約数ペア:

[(1, 20899291280), (2, 10449645640), (4, 5224822820), (5, 4179858256), (7, 2985613040), (8, 2612411410), (10, 2089929128), (14, 1492806520), (16, 1306205705), (20, 1044964564), (28, 746403260), (35, 597122608), (40, 522482282), (56, 373201630), (70, 298561304), (80, 261241141), (112, 186600815), (140, 149280652), (280, 74640326), (560, 37320163), (2383, 8770160), (4766, 4385080), (9532, 2192540), (11915, 1754032), (15661, 1334480), (16681, 1252880), (19064, 1096270), (23830, 877016), (31322, 667240), (33362, 626440), (38128, 548135), (47660, 438508), (62644, 333620), (66724, 313220), (78305, 266896), (83405, 250576), (95320, 219254), (109627, 190640), (125288, 166810), (133448, 156610)]