20799974320

素因数分解:

$2^4\times 5^1\times {\mathrm{277}}^1\times {\mathrm{353}}^1\times {\mathrm{2659}}^1$

素因数の和:3302

約数の個数: 80

約数和(自身を含む): 48690321120

約数和(自身を除く): 27890346800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 277, 353, 554, 706, 1108, 1385, 1412, 1765, 2216, 2659, 2770, 2824, 3530, 4432, 5318, 5540, 5648, 7060, 10636, 11080, 13295, 14120, 21272, 22160, 26590, 28240, 42544, 53180, 97781, 106360, 195562, 212720, 391124, 488905, 736543, 782248, 938627, 977810, 1473086, 1564496, 1877254, 1955620, 2946172, 3682715, 3754508, 3911240, 4693135, 5892344, 7365430, 7509016, 7822480, 9386270, 11784688, 14730860, 15018032, 18772540, 29461720, 37545080, 58923440, 75090160, 259999679, 519999358, 1039998716, 1299998395, 2079997432, 2599996790, 4159994864, 5199993580, 10399987160, 20799974320]

約数ペア:

[(1, 20799974320), (2, 10399987160), (4, 5199993580), (5, 4159994864), (8, 2599996790), (10, 2079997432), (16, 1299998395), (20, 1039998716), (40, 519999358), (80, 259999679), (277, 75090160), (353, 58923440), (554, 37545080), (706, 29461720), (1108, 18772540), (1385, 15018032), (1412, 14730860), (1765, 11784688), (2216, 9386270), (2659, 7822480), (2770, 7509016), (2824, 7365430), (3530, 5892344), (4432, 4693135), (5318, 3911240), (5540, 3754508), (5648, 3682715), (7060, 2946172), (10636, 1955620), (11080, 1877254), (13295, 1564496), (14120, 1473086), (21272, 977810), (22160, 938627), (26590, 782248), (28240, 736543), (42544, 488905), (53180, 391124), (97781, 212720), (106360, 195562)]