644348020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{293}}^1\times {\mathrm{3547}}^1$

素因数の和:3880

約数の個数: 48

約数和(自身を含む): 1401942528

約数和(自身を除く): 757594508

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 293, 310, 586, 620, 1172, 1465, 2930, 3547, 5860, 7094, 9083, 14188, 17735, 18166, 35470, 36332, 45415, 70940, 90830, 109957, 181660, 219914, 439828, 549785, 1039271, 1099570, 2078542, 2199140, 4157084, 5196355, 10392710, 20785420, 32217401, 64434802, 128869604, 161087005, 322174010, 644348020]

約数ペア:

[(1, 644348020), (2, 322174010), (4, 161087005), (5, 128869604), (10, 64434802), (20, 32217401), (31, 20785420), (62, 10392710), (124, 5196355), (155, 4157084), (293, 2199140), (310, 2078542), (586, 1099570), (620, 1039271), (1172, 549785), (1465, 439828), (2930, 219914), (3547, 181660), (5860, 109957), (7094, 90830), (9083, 70940), (14188, 45415), (17735, 36332), (18166, 35470)]