20507640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:197

約数の個数: 128

約数和(自身を含む): 65318400

約数和(自身を除く): 44810760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 58, 60, 71, 83, 87, 116, 120, 142, 145, 166, 174, 213, 232, 249, 284, 290, 332, 348, 355, 415, 426, 435, 498, 568, 580, 664, 696, 710, 830, 852, 870, 996, 1065, 1160, 1245, 1420, 1660, 1704, 1740, 1992, 2059, 2130, 2407, 2490, 2840, 3320, 3480, 4118, 4260, 4814, 4980, 5893, 6177, 7221, 8236, 8520, 9628, 9960, 10295, 11786, 12035, 12354, 14442, 16472, 17679, 19256, 20590, 23572, 24070, 24708, 28884, 29465, 30885, 35358, 36105, 41180, 47144, 48140, 49416, 57768, 58930, 61770, 70716, 72210, 82360, 88395, 96280, 117860, 123540, 141432, 144420, 170897, 176790, 235720, 247080, 288840, 341794, 353580, 512691, 683588, 707160, 854485, 1025382, 1367176, 1708970, 2050764, 2563455, 3417940, 4101528, 5126910, 6835880, 10253820, 20507640]

約数ペア:

[(1, 20507640), (2, 10253820), (3, 6835880), (4, 5126910), (5, 4101528), (6, 3417940), (8, 2563455), (10, 2050764), (12, 1708970), (15, 1367176), (20, 1025382), (24, 854485), (29, 707160), (30, 683588), (40, 512691), (58, 353580), (60, 341794), (71, 288840), (83, 247080), (87, 235720), (116, 176790), (120, 170897), (142, 144420), (145, 141432), (166, 123540), (174, 117860), (213, 96280), (232, 88395), (249, 82360), (284, 72210), (290, 70716), (332, 61770), (348, 58930), (355, 57768), (415, 49416), (426, 48140), (435, 47144), (498, 41180), (568, 36105), (580, 35358), (664, 30885), (696, 29465), (710, 28884), (830, 24708), (852, 24070), (870, 23572), (996, 20590), (1065, 19256), (1160, 17679), (1245, 16472), (1420, 14442), (1660, 12354), (1704, 12035), (1740, 11786), (1992, 10295), (2059, 9960), (2130, 9628), (2407, 8520), (2490, 8236), (2840, 7221), (3320, 6177), (3480, 5893), (4118, 4980), (4260, 4814)]