405635982020

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{4019}}^1\times {\mathrm{17959}}^1$

素因数の和:22268

約数の個数: 48

約数和(自身を含む): 855127324800

約数和(自身を除く): 449491342780

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 4019, 5620, 8038, 16076, 17959, 20095, 35918, 40190, 71836, 80380, 89795, 179590, 359180, 1129339, 2258678, 4517356, 5046479, 5646695, 10092958, 11293390, 20185916, 22586780, 25232395, 50464790, 72177221, 100929580, 144354442, 288708884, 360886105, 721772210, 1443544420, 20281799101, 40563598202, 81127196404, 101408995505, 202817991010, 405635982020]

約数ペア:

[(1, 405635982020), (2, 202817991010), (4, 101408995505), (5, 81127196404), (10, 40563598202), (20, 20281799101), (281, 1443544420), (562, 721772210), (1124, 360886105), (1405, 288708884), (2810, 144354442), (4019, 100929580), (5620, 72177221), (8038, 50464790), (16076, 25232395), (17959, 22586780), (20095, 20185916), (35918, 11293390), (40190, 10092958), (71836, 5646695), (80380, 5046479), (89795, 4517356), (179590, 2258678), (359180, 1129339)]