21523048

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 45144000

約数和(自身を除く): 23620952

約数列:

[1, 2, 4, 8, 19, 37, 38, 43, 74, 76, 86, 89, 148, 152, 172, 178, 296, 344, 356, 703, 712, 817, 1406, 1591, 1634, 1691, 2812, 3182, 3268, 3293, 3382, 3827, 5624, 6364, 6536, 6586, 6764, 7654, 12728, 13172, 13528, 15308, 26344, 30229, 30616, 60458, 62567, 72713, 120916, 125134, 141599, 145426, 241832, 250268, 283198, 290852, 500536, 566396, 581704, 1132792, 2690381, 5380762, 10761524, 21523048]

約数ペア:

[(1, 21523048), (2, 10761524), (4, 5380762), (8, 2690381), (19, 1132792), (37, 581704), (38, 566396), (43, 500536), (74, 290852), (76, 283198), (86, 250268), (89, 241832), (148, 145426), (152, 141599), (172, 125134), (178, 120916), (296, 72713), (344, 62567), (356, 60458), (703, 30616), (712, 30229), (817, 26344), (1406, 15308), (1591, 13528), (1634, 13172), (1691, 12728), (2812, 7654), (3182, 6764), (3268, 6586), (3293, 6536), (3382, 6364), (3827, 5624)]