27820840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{251}}^1$

素因数の和:442

約数の個数: 64

約数和(自身を含む): 66951360

約数和(自身を除く): 39130520

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 163, 170, 251, 326, 340, 502, 652, 680, 815, 1004, 1255, 1304, 1630, 2008, 2510, 2771, 3260, 4267, 5020, 5542, 6520, 8534, 10040, 11084, 13855, 17068, 21335, 22168, 27710, 34136, 40913, 42670, 55420, 81826, 85340, 110840, 163652, 170680, 204565, 327304, 409130, 695521, 818260, 1391042, 1636520, 2782084, 3477605, 5564168, 6955210, 13910420, 27820840]

約数ペア:

[(1, 27820840), (2, 13910420), (4, 6955210), (5, 5564168), (8, 3477605), (10, 2782084), (17, 1636520), (20, 1391042), (34, 818260), (40, 695521), (68, 409130), (85, 327304), (136, 204565), (163, 170680), (170, 163652), (251, 110840), (326, 85340), (340, 81826), (502, 55420), (652, 42670), (680, 40913), (815, 34136), (1004, 27710), (1255, 22168), (1304, 21335), (1630, 17068), (2008, 13855), (2510, 11084), (2771, 10040), (3260, 8534), (4267, 6520), (5020, 5542)]