28490900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{6949}}^1$

素因数の和:7004

約数の個数: 36

約数和(自身を含む): 63342300

約数和(自身を除く): 34851400

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 6949, 13898, 27796, 34745, 69490, 138980, 173725, 284909, 347450, 569818, 694900, 1139636, 1424545, 2849090, 5698180, 7122725, 14245450, 28490900]

約数ペア:

[(1, 28490900), (2, 14245450), (4, 7122725), (5, 5698180), (10, 2849090), (20, 1424545), (25, 1139636), (41, 694900), (50, 569818), (82, 347450), (100, 284909), (164, 173725), (205, 138980), (410, 69490), (820, 34745), (1025, 27796), (2050, 13898), (4100, 6949)]