31394540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{491}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 69431040

約数和(自身を除く): 38036500

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 139, 230, 278, 460, 491, 556, 695, 982, 1390, 1964, 2455, 2780, 3197, 4910, 6394, 9820, 11293, 12788, 15985, 22586, 31970, 45172, 56465, 63940, 68249, 112930, 136498, 225860, 272996, 341245, 682490, 1364980, 1569727, 3139454, 6278908, 7848635, 15697270, 31394540]

約数ペア:

[(1, 31394540), (2, 15697270), (4, 7848635), (5, 6278908), (10, 3139454), (20, 1569727), (23, 1364980), (46, 682490), (92, 341245), (115, 272996), (139, 225860), (230, 136498), (278, 112930), (460, 68249), (491, 63940), (556, 56465), (695, 45172), (982, 31970), (1390, 22586), (1964, 15985), (2455, 12788), (2780, 11293), (3197, 9820), (4910, 6394)]