4980040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:242

約数の個数: 64

約数和(自身を含む): 12342960

約数和(自身を除く): 7362920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 157, 244, 260, 305, 314, 488, 520, 610, 628, 785, 793, 1220, 1256, 1570, 1586, 2041, 2440, 3140, 3172, 3965, 4082, 6280, 6344, 7930, 8164, 9577, 10205, 15860, 16328, 19154, 20410, 31720, 38308, 40820, 47885, 76616, 81640, 95770, 124501, 191540, 249002, 383080, 498004, 622505, 996008, 1245010, 2490020, 4980040]

約数ペア:

[(1, 4980040), (2, 2490020), (4, 1245010), (5, 996008), (8, 622505), (10, 498004), (13, 383080), (20, 249002), (26, 191540), (40, 124501), (52, 95770), (61, 81640), (65, 76616), (104, 47885), (122, 40820), (130, 38308), (157, 31720), (244, 20410), (260, 19154), (305, 16328), (314, 15860), (488, 10205), (520, 9577), (610, 8164), (628, 7930), (785, 6344), (793, 6280), (1220, 4082), (1256, 3965), (1570, 3172), (1586, 3140), (2041, 2440)]