28347920

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:268

約数の個数: 80

約数和(自身を含む): 69238128

約数和(自身を除く): 40890208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 61, 74, 80, 122, 148, 157, 185, 244, 296, 305, 314, 370, 488, 592, 610, 628, 740, 785, 976, 1220, 1256, 1480, 1570, 2257, 2440, 2512, 2960, 3140, 4514, 4880, 5809, 6280, 9028, 9577, 11285, 11618, 12560, 18056, 19154, 22570, 23236, 29045, 36112, 38308, 45140, 46472, 47885, 58090, 76616, 90280, 92944, 95770, 116180, 153232, 180560, 191540, 232360, 354349, 383080, 464720, 708698, 766160, 1417396, 1771745, 2834792, 3543490, 5669584, 7086980, 14173960, 28347920]

約数ペア:

[(1, 28347920), (2, 14173960), (4, 7086980), (5, 5669584), (8, 3543490), (10, 2834792), (16, 1771745), (20, 1417396), (37, 766160), (40, 708698), (61, 464720), (74, 383080), (80, 354349), (122, 232360), (148, 191540), (157, 180560), (185, 153232), (244, 116180), (296, 95770), (305, 92944), (314, 90280), (370, 76616), (488, 58090), (592, 47885), (610, 46472), (628, 45140), (740, 38308), (785, 36112), (976, 29045), (1220, 23236), (1256, 22570), (1480, 19154), (1570, 18056), (2257, 12560), (2440, 11618), (2512, 11285), (2960, 9577), (3140, 9028), (4514, 6280), (4880, 5809)]