28668900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7351}}^1$

素因数の和:7381

約数の個数: 72

約数和(自身を含む): 89341504

約数和(自身を除く): 60672604

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 7351, 14702, 22053, 29404, 36755, 44106, 73510, 88212, 95563, 110265, 147020, 183775, 191126, 220530, 286689, 367550, 382252, 441060, 477815, 551325, 573378, 735100, 955630, 1102650, 1146756, 1433445, 1911260, 2205300, 2389075, 2866890, 4778150, 5733780, 7167225, 9556300, 14334450, 28668900]

約数ペア:

[(1, 28668900), (2, 14334450), (3, 9556300), (4, 7167225), (5, 5733780), (6, 4778150), (10, 2866890), (12, 2389075), (13, 2205300), (15, 1911260), (20, 1433445), (25, 1146756), (26, 1102650), (30, 955630), (39, 735100), (50, 573378), (52, 551325), (60, 477815), (65, 441060), (75, 382252), (78, 367550), (100, 286689), (130, 220530), (150, 191126), (156, 183775), (195, 147020), (260, 110265), (300, 95563), (325, 88212), (390, 73510), (650, 44106), (780, 36755), (975, 29404), (1300, 22053), (1950, 14702), (3900, 7351)]