20194867820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{277}}^1\times {\mathrm{1109}}^1$

素因数の和:1587

約数の個数: 96

約数和(自身を含む): 45102052800

約数和(自身を除く): 24907184980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 173, 190, 277, 346, 380, 554, 692, 865, 1108, 1109, 1385, 1730, 2218, 2770, 3287, 3460, 4436, 5263, 5540, 5545, 6574, 10526, 11090, 13148, 16435, 21052, 21071, 22180, 26315, 32870, 42142, 47921, 52630, 65740, 84284, 95842, 105260, 105355, 191684, 191857, 210710, 239605, 307193, 383714, 421420, 479210, 614386, 767428, 910499, 958420, 959285, 1228772, 1535965, 1820998, 1918570, 3071930, 3641996, 3645283, 3837140, 4552495, 5836667, 6143860, 7290566, 9104990, 11673334, 14581132, 18209980, 18226415, 23346668, 29183335, 36452830, 53144389, 58366670, 72905660, 106288778, 116733340, 212577556, 265721945, 531443890, 1009743391, 1062887780, 2019486782, 4038973564, 5048716955, 10097433910, 20194867820]

約数ペア:

[(1, 20194867820), (2, 10097433910), (4, 5048716955), (5, 4038973564), (10, 2019486782), (19, 1062887780), (20, 1009743391), (38, 531443890), (76, 265721945), (95, 212577556), (173, 116733340), (190, 106288778), (277, 72905660), (346, 58366670), (380, 53144389), (554, 36452830), (692, 29183335), (865, 23346668), (1108, 18226415), (1109, 18209980), (1385, 14581132), (1730, 11673334), (2218, 9104990), (2770, 7290566), (3287, 6143860), (3460, 5836667), (4436, 4552495), (5263, 3837140), (5540, 3645283), (5545, 3641996), (6574, 3071930), (10526, 1918570), (11090, 1820998), (13148, 1535965), (16435, 1228772), (21052, 959285), (21071, 958420), (22180, 910499), (26315, 767428), (32870, 614386), (42142, 479210), (47921, 421420), (52630, 383714), (65740, 307193), (84284, 239605), (95842, 210710), (105260, 191857), (105355, 191684)]