20973840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{311}}^1$

素因数の和:608

約数の個数: 80

約数和(自身を含む): 65460096

約数和(自身を除く): 44486256

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 281, 311, 562, 622, 843, 933, 1124, 1244, 1405, 1555, 1686, 1866, 2248, 2488, 2810, 3110, 3372, 3732, 4215, 4496, 4665, 4976, 5620, 6220, 6744, 7464, 8430, 9330, 11240, 12440, 13488, 14928, 16860, 18660, 22480, 24880, 33720, 37320, 67440, 74640, 87391, 174782, 262173, 349564, 436955, 524346, 699128, 873910, 1048692, 1310865, 1398256, 1747820, 2097384, 2621730, 3495640, 4194768, 5243460, 6991280, 10486920, 20973840]

約数ペア:

[(1, 20973840), (2, 10486920), (3, 6991280), (4, 5243460), (5, 4194768), (6, 3495640), (8, 2621730), (10, 2097384), (12, 1747820), (15, 1398256), (16, 1310865), (20, 1048692), (24, 873910), (30, 699128), (40, 524346), (48, 436955), (60, 349564), (80, 262173), (120, 174782), (240, 87391), (281, 74640), (311, 67440), (562, 37320), (622, 33720), (843, 24880), (933, 22480), (1124, 18660), (1244, 16860), (1405, 14928), (1555, 13488), (1686, 12440), (1866, 11240), (2248, 9330), (2488, 8430), (2810, 7464), (3110, 6744), (3372, 6220), (3732, 5620), (4215, 4976), (4496, 4665)]