20871772020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{148469}}^1$

素因数の和:148566

約数の個数: 144

約数和(自身を含む): 70039831680

約数和(自身を除く): 49168059660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 71, 90, 99, 110, 132, 142, 165, 180, 198, 213, 220, 284, 330, 355, 396, 426, 495, 639, 660, 710, 781, 852, 990, 1065, 1278, 1420, 1562, 1980, 2130, 2343, 2556, 3124, 3195, 3905, 4260, 4686, 6390, 7029, 7810, 9372, 11715, 12780, 14058, 15620, 23430, 28116, 35145, 46860, 70290, 140580, 148469, 296938, 445407, 593876, 742345, 890814, 1336221, 1484690, 1633159, 1781628, 2227035, 2672442, 2969380, 3266318, 4454070, 4899477, 5344884, 6532636, 6681105, 8165795, 8908140, 9798954, 10541299, 13362210, 14698431, 16331590, 19597908, 21082598, 24497385, 26724420, 29396862, 31623897, 32663180, 42165196, 48994770, 52706495, 58793724, 63247794, 73492155, 94871691, 97989540, 105412990, 115954289, 126495588, 146984310, 158119485, 189743382, 210825980, 231908578, 293968620, 316238970, 347862867, 379486764, 463817156, 474358455, 579771445, 632477940, 695725734, 948716910, 1043588601, 1159542890, 1391451468, 1739314335, 1897433820, 2087177202, 2319085780, 3478628670, 4174354404, 5217943005, 6957257340, 10435886010, 20871772020]

約数ペア:

[(1, 20871772020), (2, 10435886010), (3, 6957257340), (4, 5217943005), (5, 4174354404), (6, 3478628670), (9, 2319085780), (10, 2087177202), (11, 1897433820), (12, 1739314335), (15, 1391451468), (18, 1159542890), (20, 1043588601), (22, 948716910), (30, 695725734), (33, 632477940), (36, 579771445), (44, 474358455), (45, 463817156), (55, 379486764), (60, 347862867), (66, 316238970), (71, 293968620), (90, 231908578), (99, 210825980), (110, 189743382), (132, 158119485), (142, 146984310), (165, 126495588), (180, 115954289), (198, 105412990), (213, 97989540), (220, 94871691), (284, 73492155), (330, 63247794), (355, 58793724), (396, 52706495), (426, 48994770), (495, 42165196), (639, 32663180), (660, 31623897), (710, 29396862), (781, 26724420), (852, 24497385), (990, 21082598), (1065, 19597908), (1278, 16331590), (1420, 14698431), (1562, 13362210), (1980, 10541299), (2130, 9798954), (2343, 8908140), (2556, 8165795), (3124, 6681105), (3195, 6532636), (3905, 5344884), (4260, 4899477), (4686, 4454070), (6390, 3266318), (7029, 2969380), (7810, 2672442), (9372, 2227035), (11715, 1781628), (12780, 1633159), (14058, 1484690), (15620, 1336221), (23430, 890814), (28116, 742345), (35145, 593876), (46860, 445407), (70290, 296938), (140580, 148469)]