399683440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{1693}}^1$

素因数の和:1946

約数の個数: 80

約数和(自身を含む): 1005748128

約数和(自身を除く): 606064688

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 227, 260, 454, 520, 908, 1040, 1135, 1693, 1816, 2270, 2951, 3386, 3632, 4540, 5902, 6772, 8465, 9080, 11804, 13544, 14755, 16930, 18160, 22009, 23608, 27088, 29510, 33860, 44018, 47216, 59020, 67720, 88036, 110045, 118040, 135440, 176072, 220090, 236080, 352144, 384311, 440180, 768622, 880360, 1537244, 1760720, 1921555, 3074488, 3843110, 4996043, 6148976, 7686220, 9992086, 15372440, 19984172, 24980215, 30744880, 39968344, 49960430, 79936688, 99920860, 199841720, 399683440]

約数ペア:

[(1, 399683440), (2, 199841720), (4, 99920860), (5, 79936688), (8, 49960430), (10, 39968344), (13, 30744880), (16, 24980215), (20, 19984172), (26, 15372440), (40, 9992086), (52, 7686220), (65, 6148976), (80, 4996043), (104, 3843110), (130, 3074488), (208, 1921555), (227, 1760720), (260, 1537244), (454, 880360), (520, 768622), (908, 440180), (1040, 384311), (1135, 352144), (1693, 236080), (1816, 220090), (2270, 176072), (2951, 135440), (3386, 118040), (3632, 110045), (4540, 88036), (5902, 67720), (6772, 59020), (8465, 47216), (9080, 44018), (11804, 33860), (13544, 29510), (14755, 27088), (16930, 23608), (18160, 22009)]