21875750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 45287424

約数和(自身を除く): 23411674

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 53, 65, 106, 125, 127, 130, 250, 254, 265, 325, 530, 635, 650, 689, 1270, 1325, 1378, 1625, 1651, 2650, 3175, 3250, 3302, 3445, 6350, 6625, 6731, 6890, 8255, 13250, 13462, 15875, 16510, 17225, 31750, 33655, 34450, 41275, 67310, 82550, 86125, 87503, 168275, 172250, 175006, 206375, 336550, 412750, 437515, 841375, 875030, 1682750, 2187575, 4375150, 10937875, 21875750]

約数ペア:

[(1, 21875750), (2, 10937875), (5, 4375150), (10, 2187575), (13, 1682750), (25, 875030), (26, 841375), (50, 437515), (53, 412750), (65, 336550), (106, 206375), (125, 175006), (127, 172250), (130, 168275), (250, 87503), (254, 86125), (265, 82550), (325, 67310), (530, 41275), (635, 34450), (650, 33655), (689, 31750), (1270, 17225), (1325, 16510), (1378, 15875), (1625, 13462), (1651, 13250), (2650, 8255), (3175, 6890), (3250, 6731), (3302, 6625), (3445, 6350)]