21557580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{367}}^1$

素因数の和:479

約数の個数: 96

約数和(自身を含む): 66769920

約数和(自身を除く): 45212340

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 89, 110, 132, 165, 178, 220, 267, 330, 356, 367, 445, 534, 660, 734, 890, 979, 1068, 1101, 1335, 1468, 1780, 1835, 1958, 2202, 2670, 2937, 3670, 3916, 4037, 4404, 4895, 5340, 5505, 5874, 7340, 8074, 9790, 11010, 11748, 12111, 14685, 16148, 19580, 20185, 22020, 24222, 29370, 32663, 40370, 48444, 58740, 60555, 65326, 80740, 97989, 121110, 130652, 163315, 195978, 242220, 326630, 359293, 391956, 489945, 653260, 718586, 979890, 1077879, 1437172, 1796465, 1959780, 2155758, 3592930, 4311516, 5389395, 7185860, 10778790, 21557580]

約数ペア:

[(1, 21557580), (2, 10778790), (3, 7185860), (4, 5389395), (5, 4311516), (6, 3592930), (10, 2155758), (11, 1959780), (12, 1796465), (15, 1437172), (20, 1077879), (22, 979890), (30, 718586), (33, 653260), (44, 489945), (55, 391956), (60, 359293), (66, 326630), (89, 242220), (110, 195978), (132, 163315), (165, 130652), (178, 121110), (220, 97989), (267, 80740), (330, 65326), (356, 60555), (367, 58740), (445, 48444), (534, 40370), (660, 32663), (734, 29370), (890, 24222), (979, 22020), (1068, 20185), (1101, 19580), (1335, 16148), (1468, 14685), (1780, 12111), (1835, 11748), (1958, 11010), (2202, 9790), (2670, 8074), (2937, 7340), (3670, 5874), (3916, 5505), (4037, 5340), (4404, 4895)]