28723860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:278

約数の個数: 144

約数和(自身を含む): 96707520

約数和(自身を除く): 67983660

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, 89, 90, 99, 110, 132, 163, 165, 178, 180, 198, 220, 267, 326, 330, 356, 396, 445, 489, 495, 534, 652, 660, 801, 815, 890, 978, 979, 990, 1068, 1335, 1467, 1602, 1630, 1780, 1793, 1956, 1958, 1980, 2445, 2670, 2934, 2937, 3204, 3260, 3586, 3916, 4005, 4890, 4895, 5340, 5379, 5868, 5874, 7172, 7335, 8010, 8811, 8965, 9780, 9790, 10758, 11748, 14507, 14670, 14685, 16020, 16137, 17622, 17930, 19580, 21516, 26895, 29014, 29340, 29370, 32274, 35244, 35860, 43521, 44055, 53790, 58028, 58740, 64548, 72535, 80685, 87042, 88110, 107580, 130563, 145070, 159577, 161370, 174084, 176220, 217605, 261126, 290140, 319154, 322740, 435210, 478731, 522252, 638308, 652815, 797885, 870420, 957462, 1305630, 1436193, 1595770, 1914924, 2393655, 2611260, 2872386, 3191540, 4787310, 5744772, 7180965, 9574620, 14361930, 28723860]

約数ペア:

[(1, 28723860), (2, 14361930), (3, 9574620), (4, 7180965), (5, 5744772), (6, 4787310), (9, 3191540), (10, 2872386), (11, 2611260), (12, 2393655), (15, 1914924), (18, 1595770), (20, 1436193), (22, 1305630), (30, 957462), (33, 870420), (36, 797885), (44, 652815), (45, 638308), (55, 522252), (60, 478731), (66, 435210), (89, 322740), (90, 319154), (99, 290140), (110, 261126), (132, 217605), (163, 176220), (165, 174084), (178, 161370), (180, 159577), (198, 145070), (220, 130563), (267, 107580), (326, 88110), (330, 87042), (356, 80685), (396, 72535), (445, 64548), (489, 58740), (495, 58028), (534, 53790), (652, 44055), (660, 43521), (801, 35860), (815, 35244), (890, 32274), (978, 29370), (979, 29340), (990, 29014), (1068, 26895), (1335, 21516), (1467, 19580), (1602, 17930), (1630, 17622), (1780, 16137), (1793, 16020), (1956, 14685), (1958, 14670), (1980, 14507), (2445, 11748), (2670, 10758), (2934, 9790), (2937, 9780), (3204, 8965), (3260, 8811), (3586, 8010), (3916, 7335), (4005, 7172), (4890, 5874), (4895, 5868), (5340, 5379)]