21235577.000000000

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{233}}^1$

素因数の和:284

約数の個数: 160

約数和(自身を含む): 313372800

約数和(自身を除く): 204682960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 170, 196, 233, 238, 245, 272, 280, 340, 343, 392, 466, 476, 490, 560, 595, 680, 686, 784, 833, 932, 952, 980, 1165, 1190, 1360, 1372, 1631, 1666, 1715, 1864, 1904, 1960, 2330, 2380, 2744, 3262, 3332, 3430, 3728, 3920, 3961, 4165, 4660, 4760, 5488, 5831, 6524, 6664, 6860, 7922, 8155, 8330, 9320, 9520, 11417, 11662, 13048, 13328, 13720, 15844, 16310, 16660, 18640, 19805, 22834, 23324, 26096, 27440, 27727, 29155, 31688, 32620, 33320, 39610, 45668, 46648, 55454, 57085, 58310, 63376, 65240, 66640, 79220, 79919, 91336, 93296, 110908, 114170, 116620, 130480, 138635, 158440, 159838, 182672, 194089, 221816, 228340, 233240, 277270, 316880, 319676, 388178, 399595, 443632, 456680, 466480, 554540, 639352, 776356, 799190, 913360, 970445, 1109080, 1278704, 1358623, 1552712, 1598380, 1940890, 2218160, 2717246, 3105424, 3196760, 3881780, 5434492, 6393520, 6793115, 7763560, 10868984, 13586230, 15527120, 21737968, 27172460, 54344920, 108689840]

約数ペア:

[(1, 108689840), (2, 54344920), (4, 27172460), (5, 21737968), (7, 15527120), (8, 13586230), (10, 10868984), (14, 7763560), (16, 6793115), (17, 6393520), (20, 5434492), (28, 3881780), (34, 3196760), (35, 3105424), (40, 2717246), (49, 2218160), (56, 1940890), (68, 1598380), (70, 1552712), (80, 1358623), (85, 1278704), (98, 1109080), (112, 970445), (119, 913360), (136, 799190), (140, 776356), (170, 639352), (196, 554540), (233, 466480), (238, 456680), (245, 443632), (272, 399595), (280, 388178), (340, 319676), (343, 316880), (392, 277270), (466, 233240), (476, 228340), (490, 221816), (560, 194089), (595, 182672), (680, 159838), (686, 158440), (784, 138635), (833, 130480), (932, 116620), (952, 114170), (980, 110908), (1165, 93296), (1190, 91336), (1360, 79919), (1372, 79220), (1631, 66640), (1666, 65240), (1715, 63376), (1864, 58310), (1904, 57085), (1960, 55454), (2330, 46648), (2380, 45668), (2744, 39610), (3262, 33320), (3332, 32620), (3430, 31688), (3728, 29155), (3920, 27727), (3961, 27440), (4165, 26096), (4660, 23324), (4760, 22834), (5488, 19805), (5831, 18640), (6524, 16660), (6664, 16310), (6860, 15844), (7922, 13720), (8155, 13328), (8330, 13048), (9320, 11662), (9520, 11417)]