31000100

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{7561}}^1$

素因数の和:7616

約数の個数: 36

約数和(自身を含む): 68920068

約数和(自身を除く): 37919968

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 7561, 15122, 30244, 37805, 75610, 151220, 189025, 310001, 378050, 620002, 756100, 1240004, 1550005, 3100010, 6200020, 7750025, 15500050, 31000100]

約数ペア:

[(1, 31000100), (2, 15500050), (4, 7750025), (5, 6200020), (10, 3100010), (20, 1550005), (25, 1240004), (41, 756100), (50, 620002), (82, 378050), (100, 310001), (164, 189025), (205, 151220), (410, 75610), (820, 37805), (1025, 30244), (2050, 15122), (4100, 7561)]