2007120880

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1\times {\mathrm{1231}}^1$

素因数の和:1562

約数の個数: 80

約数和(自身を含む): 4743446400

約数和(自身を除く): 2736325520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 229, 356, 445, 458, 712, 890, 916, 1145, 1231, 1424, 1780, 1832, 2290, 2462, 3560, 3664, 4580, 4924, 6155, 7120, 9160, 9848, 12310, 18320, 19696, 20381, 24620, 40762, 49240, 81524, 98480, 101905, 109559, 163048, 203810, 219118, 281899, 326096, 407620, 438236, 547795, 563798, 815240, 876472, 1095590, 1127596, 1409495, 1630480, 1752944, 2191180, 2255192, 2818990, 4382360, 4510384, 5637980, 8764720, 11275960, 22551920, 25089011, 50178022, 100356044, 125445055, 200712088, 250890110, 401424176, 501780220, 1003560440, 2007120880]

約数ペア:

[(1, 2007120880), (2, 1003560440), (4, 501780220), (5, 401424176), (8, 250890110), (10, 200712088), (16, 125445055), (20, 100356044), (40, 50178022), (80, 25089011), (89, 22551920), (178, 11275960), (229, 8764720), (356, 5637980), (445, 4510384), (458, 4382360), (712, 2818990), (890, 2255192), (916, 2191180), (1145, 1752944), (1231, 1630480), (1424, 1409495), (1780, 1127596), (1832, 1095590), (2290, 876472), (2462, 815240), (3560, 563798), (3664, 547795), (4580, 438236), (4924, 407620), (6155, 326096), (7120, 281899), (9160, 219118), (9848, 203810), (12310, 163048), (18320, 109559), (19696, 101905), (20381, 98480), (24620, 81524), (40762, 49240)]