21814520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{461}}^1$

素因数の和:505

約数の個数: 96

約数和(自身を含む): 60873120

約数和(自身を除く): 39058600

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 169, 182, 260, 280, 338, 364, 455, 461, 520, 676, 728, 845, 910, 922, 1183, 1352, 1690, 1820, 1844, 2305, 2366, 3227, 3380, 3640, 3688, 4610, 4732, 5915, 5993, 6454, 6760, 9220, 9464, 11830, 11986, 12908, 16135, 18440, 23660, 23972, 25816, 29965, 32270, 41951, 47320, 47944, 59930, 64540, 77909, 83902, 119860, 129080, 155818, 167804, 209755, 239720, 311636, 335608, 389545, 419510, 545363, 623272, 779090, 839020, 1090726, 1558180, 1678040, 2181452, 2726815, 3116360, 4362904, 5453630, 10907260, 21814520]

約数ペア:

[(1, 21814520), (2, 10907260), (4, 5453630), (5, 4362904), (7, 3116360), (8, 2726815), (10, 2181452), (13, 1678040), (14, 1558180), (20, 1090726), (26, 839020), (28, 779090), (35, 623272), (40, 545363), (52, 419510), (56, 389545), (65, 335608), (70, 311636), (91, 239720), (104, 209755), (130, 167804), (140, 155818), (169, 129080), (182, 119860), (260, 83902), (280, 77909), (338, 64540), (364, 59930), (455, 47944), (461, 47320), (520, 41951), (676, 32270), (728, 29965), (845, 25816), (910, 23972), (922, 23660), (1183, 18440), (1352, 16135), (1690, 12908), (1820, 11986), (1844, 11830), (2305, 9464), (2366, 9220), (3227, 6760), (3380, 6454), (3640, 5993), (3688, 5915), (4610, 4732)]