280292740

素因数分解:

$2^2\times 5^1\times 7^4\times {\mathrm{13}}^1\times {\mathrm{449}}^1$

素因数の和:499

約数の個数: 120

約数和(自身を含む): 741144600

約数和(自身を除く): 460851860

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 343, 364, 449, 455, 490, 637, 686, 898, 910, 980, 1274, 1372, 1715, 1796, 1820, 2245, 2401, 2548, 3143, 3185, 3430, 4459, 4490, 4802, 5837, 6286, 6370, 6860, 8918, 8980, 9604, 11674, 12005, 12572, 12740, 15715, 17836, 22001, 22295, 23348, 24010, 29185, 31213, 31430, 40859, 44002, 44590, 48020, 58370, 62426, 62860, 81718, 88004, 89180, 110005, 116740, 124852, 154007, 156065, 163436, 204295, 220010, 286013, 308014, 312130, 408590, 440020, 572026, 616028, 624260, 770035, 817180, 1078049, 1144052, 1430065, 1540070, 2002091, 2156098, 2860130, 3080140, 4004182, 4312196, 5390245, 5720260, 8008364, 10010455, 10780490, 14014637, 20020910, 21560980, 28029274, 40041820, 56058548, 70073185, 140146370, 280292740]

約数ペア:

[(1, 280292740), (2, 140146370), (4, 70073185), (5, 56058548), (7, 40041820), (10, 28029274), (13, 21560980), (14, 20020910), (20, 14014637), (26, 10780490), (28, 10010455), (35, 8008364), (49, 5720260), (52, 5390245), (65, 4312196), (70, 4004182), (91, 3080140), (98, 2860130), (130, 2156098), (140, 2002091), (182, 1540070), (196, 1430065), (245, 1144052), (260, 1078049), (343, 817180), (364, 770035), (449, 624260), (455, 616028), (490, 572026), (637, 440020), (686, 408590), (898, 312130), (910, 308014), (980, 286013), (1274, 220010), (1372, 204295), (1715, 163436), (1796, 156065), (1820, 154007), (2245, 124852), (2401, 116740), (2548, 110005), (3143, 89180), (3185, 88004), (3430, 81718), (4459, 62860), (4490, 62426), (4802, 58370), (5837, 48020), (6286, 44590), (6370, 44002), (6860, 40859), (8918, 31430), (8980, 31213), (9604, 29185), (11674, 24010), (12005, 23348), (12572, 22295), (12740, 22001), (15715, 17836)]