80402840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:265

約数の個数: 128

約数和(自身を含む): 218419200

約数和(自身を除く): 138016360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 59, 62, 70, 118, 124, 140, 155, 157, 217, 236, 248, 280, 295, 310, 314, 413, 434, 472, 590, 620, 628, 785, 826, 868, 1085, 1099, 1180, 1240, 1256, 1570, 1652, 1736, 1829, 2065, 2170, 2198, 2360, 3140, 3304, 3658, 4130, 4340, 4396, 4867, 5495, 6280, 7316, 8260, 8680, 8792, 9145, 9263, 9734, 10990, 12803, 14632, 16520, 18290, 18526, 19468, 21980, 24335, 25606, 34069, 36580, 37052, 38936, 43960, 46315, 48670, 51212, 64015, 64841, 68138, 73160, 74104, 92630, 97340, 102424, 128030, 129682, 136276, 170345, 185260, 194680, 256060, 259364, 272552, 287153, 324205, 340690, 370520, 512120, 518728, 574306, 648410, 681380, 1148612, 1296820, 1362760, 1435765, 2010071, 2297224, 2593640, 2871530, 4020142, 5743060, 8040284, 10050355, 11486120, 16080568, 20100710, 40201420, 80402840]

約数ペア:

[(1, 80402840), (2, 40201420), (4, 20100710), (5, 16080568), (7, 11486120), (8, 10050355), (10, 8040284), (14, 5743060), (20, 4020142), (28, 2871530), (31, 2593640), (35, 2297224), (40, 2010071), (56, 1435765), (59, 1362760), (62, 1296820), (70, 1148612), (118, 681380), (124, 648410), (140, 574306), (155, 518728), (157, 512120), (217, 370520), (236, 340690), (248, 324205), (280, 287153), (295, 272552), (310, 259364), (314, 256060), (413, 194680), (434, 185260), (472, 170345), (590, 136276), (620, 129682), (628, 128030), (785, 102424), (826, 97340), (868, 92630), (1085, 74104), (1099, 73160), (1180, 68138), (1240, 64841), (1256, 64015), (1570, 51212), (1652, 48670), (1736, 46315), (1829, 43960), (2065, 38936), (2170, 37052), (2198, 36580), (2360, 34069), (3140, 25606), (3304, 24335), (3658, 21980), (4130, 19468), (4340, 18526), (4396, 18290), (4867, 16520), (5495, 14632), (6280, 12803), (7316, 10990), (8260, 9734), (8680, 9263), (8792, 9145)]