21910020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{373}}^1$

素因数の和:485

約数の個数: 96

約数和(自身を含む): 67858560

約数和(自身を除く): 45948540

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, 373, 445, 534, 660, 746, 890, 979, 1068, 1119, 1335, 1492, 1780, 1865, 1958, 2238, 2670, 2937, 3730, 3916, 4103, 4476, 4895, 5340, 5595, 5874, 7460, 8206, 9790, 11190, 11748, 12309, 14685, 16412, 19580, 20515, 22380, 24618, 29370, 33197, 41030, 49236, 58740, 61545, 66394, 82060, 99591, 123090, 132788, 165985, 199182, 246180, 331970, 365167, 398364, 497955, 663940, 730334, 995910, 1095501, 1460668, 1825835, 1991820, 2191002, 3651670, 4382004, 5477505, 7303340, 10955010, 21910020]

約数ペア:

[(1, 21910020), (2, 10955010), (3, 7303340), (4, 5477505), (5, 4382004), (6, 3651670), (10, 2191002), (11, 1991820), (12, 1825835), (15, 1460668), (20, 1095501), (22, 995910), (30, 730334), (33, 663940), (44, 497955), (55, 398364), (60, 365167), (66, 331970), (89, 246180), (110, 199182), (132, 165985), (165, 132788), (178, 123090), (220, 99591), (267, 82060), (330, 66394), (356, 61545), (373, 58740), (445, 49236), (534, 41030), (660, 33197), (746, 29370), (890, 24618), (979, 22380), (1068, 20515), (1119, 19580), (1335, 16412), (1492, 14685), (1780, 12309), (1865, 11748), (1958, 11190), (2238, 9790), (2670, 8206), (2937, 7460), (3730, 5874), (3916, 5595), (4103, 5340), (4476, 4895)]