161971280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1\times {\mathrm{271}}^1$

素因数の和:556

約数の個数: 80

約数和(自身を含む): 391784448

約数和(自身を除く): 229813168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 241, 248, 271, 310, 482, 496, 542, 620, 964, 1084, 1205, 1240, 1355, 1928, 2168, 2410, 2480, 2710, 3856, 4336, 4820, 5420, 7471, 8401, 9640, 10840, 14942, 16802, 19280, 21680, 29884, 33604, 37355, 42005, 59768, 65311, 67208, 74710, 84010, 119536, 130622, 134416, 149420, 168020, 261244, 298840, 326555, 336040, 522488, 597680, 653110, 672080, 1044976, 1306220, 2024641, 2612440, 4049282, 5224880, 8098564, 10123205, 16197128, 20246410, 32394256, 40492820, 80985640, 161971280]

約数ペア:

[(1, 161971280), (2, 80985640), (4, 40492820), (5, 32394256), (8, 20246410), (10, 16197128), (16, 10123205), (20, 8098564), (31, 5224880), (40, 4049282), (62, 2612440), (80, 2024641), (124, 1306220), (155, 1044976), (241, 672080), (248, 653110), (271, 597680), (310, 522488), (482, 336040), (496, 326555), (542, 298840), (620, 261244), (964, 168020), (1084, 149420), (1205, 134416), (1240, 130622), (1355, 119536), (1928, 84010), (2168, 74710), (2410, 67208), (2480, 65311), (2710, 59768), (3856, 42005), (4336, 37355), (4820, 33604), (5420, 29884), (7471, 21680), (8401, 19280), (9640, 16802), (10840, 14942)]