399854832

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{640793}}^1$

素因数の和:640817

約数の個数: 40

約数和(自身を含む): 1112418384

約数和(自身を除く): 712563552

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624, 640793, 1281586, 1922379, 2563172, 3844758, 5126344, 7689516, 8330309, 10252688, 15379032, 16660618, 24990927, 30758064, 33321236, 49981854, 66642472, 99963708, 133284944, 199927416, 399854832]

約数ペア:

[(1, 399854832), (2, 199927416), (3, 133284944), (4, 99963708), (6, 66642472), (8, 49981854), (12, 33321236), (13, 30758064), (16, 24990927), (24, 16660618), (26, 15379032), (39, 10252688), (48, 8330309), (52, 7689516), (78, 5126344), (104, 3844758), (156, 2563172), (208, 1922379), (312, 1281586), (624, 640793)]