20479220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:153

約数の個数: 96

約数和(自身を含む): 49351680

約数和(自身を除く): 28872460

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 31, 34, 58, 62, 67, 68, 85, 116, 124, 134, 145, 155, 170, 268, 290, 310, 335, 340, 493, 527, 580, 620, 670, 899, 986, 1054, 1139, 1340, 1798, 1943, 1972, 2077, 2108, 2278, 2465, 2635, 3596, 3886, 4154, 4495, 4556, 4930, 5270, 5695, 7772, 8308, 8990, 9715, 9860, 10385, 10540, 11390, 15283, 17980, 19430, 20770, 22780, 30566, 33031, 35309, 38860, 41540, 60233, 61132, 66062, 70618, 76415, 120466, 132124, 141236, 152830, 165155, 176545, 240932, 301165, 305660, 330310, 353090, 602330, 660620, 706180, 1023961, 1204660, 2047922, 4095844, 5119805, 10239610, 20479220]

約数ペア:

[(1, 20479220), (2, 10239610), (4, 5119805), (5, 4095844), (10, 2047922), (17, 1204660), (20, 1023961), (29, 706180), (31, 660620), (34, 602330), (58, 353090), (62, 330310), (67, 305660), (68, 301165), (85, 240932), (116, 176545), (124, 165155), (134, 152830), (145, 141236), (155, 132124), (170, 120466), (268, 76415), (290, 70618), (310, 66062), (335, 61132), (340, 60233), (493, 41540), (527, 38860), (580, 35309), (620, 33031), (670, 30566), (899, 22780), (986, 20770), (1054, 19430), (1139, 17980), (1340, 15283), (1798, 11390), (1943, 10540), (1972, 10385), (2077, 9860), (2108, 9715), (2278, 8990), (2465, 8308), (2635, 7772), (3596, 5695), (3886, 5270), (4154, 4930), (4495, 4556)]