64651120

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:374

約数の個数: 80

約数和(自身を含む): 157132800

約数和(自身を除く): 92481680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 131, 155, 199, 248, 262, 310, 398, 496, 524, 620, 655, 796, 995, 1048, 1240, 1310, 1592, 1990, 2096, 2480, 2620, 3184, 3980, 4061, 5240, 6169, 7960, 8122, 10480, 12338, 15920, 16244, 20305, 24676, 26069, 30845, 32488, 40610, 49352, 52138, 61690, 64976, 81220, 98704, 104276, 123380, 130345, 162440, 208552, 246760, 260690, 324880, 417104, 493520, 521380, 808139, 1042760, 1616278, 2085520, 3232556, 4040695, 6465112, 8081390, 12930224, 16162780, 32325560, 64651120]

約数ペア:

[(1, 64651120), (2, 32325560), (4, 16162780), (5, 12930224), (8, 8081390), (10, 6465112), (16, 4040695), (20, 3232556), (31, 2085520), (40, 1616278), (62, 1042760), (80, 808139), (124, 521380), (131, 493520), (155, 417104), (199, 324880), (248, 260690), (262, 246760), (310, 208552), (398, 162440), (496, 130345), (524, 123380), (620, 104276), (655, 98704), (796, 81220), (995, 64976), (1048, 61690), (1240, 52138), (1310, 49352), (1592, 40610), (1990, 32488), (2096, 30845), (2480, 26069), (2620, 24676), (3184, 20305), (3980, 16244), (4061, 15920), (5240, 12338), (6169, 10480), (7960, 8122)]