778469140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{10399}}^1$

素因数の和:10624

約数の個数: 48

約数和(自身を含む): 1729728000

約数和(自身を除く): 951258860

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 197, 380, 394, 788, 985, 1970, 3743, 3940, 7486, 10399, 14972, 18715, 20798, 37430, 41596, 51995, 74860, 103990, 197581, 207980, 395162, 790324, 987905, 1975810, 2048603, 3951620, 4097206, 8194412, 10243015, 20486030, 38923457, 40972060, 77846914, 155693828, 194617285, 389234570, 778469140]

約数ペア:

[(1, 778469140), (2, 389234570), (4, 194617285), (5, 155693828), (10, 77846914), (19, 40972060), (20, 38923457), (38, 20486030), (76, 10243015), (95, 8194412), (190, 4097206), (197, 3951620), (380, 2048603), (394, 1975810), (788, 987905), (985, 790324), (1970, 395162), (3743, 207980), (3940, 197581), (7486, 103990), (10399, 74860), (14972, 51995), (18715, 41596), (20798, 37430)]