660778840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1\times {\mathrm{1193}}^1$

素因数の和:1492

約数の個数: 64

約数和(自身を含む): 1519054560

約数和(自身を除く): 858275720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 227, 244, 305, 454, 488, 610, 908, 1135, 1193, 1220, 1816, 2270, 2386, 2440, 4540, 4772, 5965, 9080, 9544, 11930, 13847, 23860, 27694, 47720, 55388, 69235, 72773, 110776, 138470, 145546, 270811, 276940, 291092, 363865, 541622, 553880, 582184, 727730, 1083244, 1354055, 1455460, 2166488, 2708110, 2910920, 5416220, 10832440, 16519471, 33038942, 66077884, 82597355, 132155768, 165194710, 330389420, 660778840]

約数ペア:

[(1, 660778840), (2, 330389420), (4, 165194710), (5, 132155768), (8, 82597355), (10, 66077884), (20, 33038942), (40, 16519471), (61, 10832440), (122, 5416220), (227, 2910920), (244, 2708110), (305, 2166488), (454, 1455460), (488, 1354055), (610, 1083244), (908, 727730), (1135, 582184), (1193, 553880), (1220, 541622), (1816, 363865), (2270, 291092), (2386, 276940), (2440, 270811), (4540, 145546), (4772, 138470), (5965, 110776), (9080, 72773), (9544, 69235), (11930, 55388), (13847, 47720), (23860, 27694)]