20251980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16073}}^1$

素因数の和:16095

約数の個数: 72

約数和(自身を含む): 70211232

約数和(自身を除く): 49959252

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16073, 32146, 48219, 64292, 80365, 96438, 112511, 144657, 160730, 192876, 225022, 241095, 289314, 321460, 337533, 450044, 482190, 562555, 578628, 675066, 723285, 964380, 1012599, 1125110, 1350132, 1446570, 1687665, 2025198, 2250220, 2893140, 3375330, 4050396, 5062995, 6750660, 10125990, 20251980]

約数ペア:

[(1, 20251980), (2, 10125990), (3, 6750660), (4, 5062995), (5, 4050396), (6, 3375330), (7, 2893140), (9, 2250220), (10, 2025198), (12, 1687665), (14, 1446570), (15, 1350132), (18, 1125110), (20, 1012599), (21, 964380), (28, 723285), (30, 675066), (35, 578628), (36, 562555), (42, 482190), (45, 450044), (60, 337533), (63, 321460), (70, 289314), (84, 241095), (90, 225022), (105, 192876), (126, 160730), (140, 144657), (180, 112511), (210, 96438), (252, 80365), (315, 64292), (420, 48219), (630, 32146), (1260, 16073)]