407628520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{4993}}^1$

素因数の和:5174

約数の個数: 64

約数和(自身を含む): 994205520

約数和(自身を除く): 586577000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 157, 260, 314, 520, 628, 785, 1256, 1570, 2041, 3140, 4082, 4993, 6280, 8164, 9986, 10205, 16328, 19972, 20410, 24965, 39944, 40820, 49930, 64909, 81640, 99860, 129818, 199720, 259636, 324545, 519272, 649090, 783901, 1298180, 1567802, 2596360, 3135604, 3919505, 6271208, 7839010, 10190713, 15678020, 20381426, 31356040, 40762852, 50953565, 81525704, 101907130, 203814260, 407628520]

約数ペア:

[(1, 407628520), (2, 203814260), (4, 101907130), (5, 81525704), (8, 50953565), (10, 40762852), (13, 31356040), (20, 20381426), (26, 15678020), (40, 10190713), (52, 7839010), (65, 6271208), (104, 3919505), (130, 3135604), (157, 2596360), (260, 1567802), (314, 1298180), (520, 783901), (628, 649090), (785, 519272), (1256, 324545), (1570, 259636), (2041, 199720), (3140, 129818), (4082, 99860), (4993, 81640), (6280, 64909), (8164, 49930), (9986, 40820), (10205, 39944), (16328, 24965), (19972, 20410)]