20761000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{1597}}^1$

素因数の和:1631

約数の個数: 64

約数和(自身を含む): 52350480

約数和(自身を除く): 31589480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 500, 520, 650, 1000, 1300, 1597, 1625, 2600, 3194, 3250, 6388, 6500, 7985, 12776, 13000, 15970, 20761, 31940, 39925, 41522, 63880, 79850, 83044, 103805, 159700, 166088, 199625, 207610, 319400, 399250, 415220, 519025, 798500, 830440, 1038050, 1597000, 2076100, 2595125, 4152200, 5190250, 10380500, 20761000]

約数ペア:

[(1, 20761000), (2, 10380500), (4, 5190250), (5, 4152200), (8, 2595125), (10, 2076100), (13, 1597000), (20, 1038050), (25, 830440), (26, 798500), (40, 519025), (50, 415220), (52, 399250), (65, 319400), (100, 207610), (104, 199625), (125, 166088), (130, 159700), (200, 103805), (250, 83044), (260, 79850), (325, 63880), (500, 41522), (520, 39925), (650, 31940), (1000, 20761), (1300, 15970), (1597, 13000), (1625, 12776), (2600, 7985), (3194, 6500), (3250, 6388)]