20869560

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1999}}^1$

素因数の和:2045

約数の個数: 96

約数和(自身を含む): 70200000

約数和(自身を除く): 49330440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 29, 30, 36, 40, 45, 58, 60, 72, 87, 90, 116, 120, 145, 174, 180, 232, 261, 290, 348, 360, 435, 522, 580, 696, 870, 1044, 1160, 1305, 1740, 1999, 2088, 2610, 3480, 3998, 5220, 5997, 7996, 9995, 10440, 11994, 15992, 17991, 19990, 23988, 29985, 35982, 39980, 47976, 57971, 59970, 71964, 79960, 89955, 115942, 119940, 143928, 173913, 179910, 231884, 239880, 289855, 347826, 359820, 463768, 521739, 579710, 695652, 719640, 869565, 1043478, 1159420, 1391304, 1739130, 2086956, 2318840, 2608695, 3478260, 4173912, 5217390, 6956520, 10434780, 20869560]

約数ペア:

[(1, 20869560), (2, 10434780), (3, 6956520), (4, 5217390), (5, 4173912), (6, 3478260), (8, 2608695), (9, 2318840), (10, 2086956), (12, 1739130), (15, 1391304), (18, 1159420), (20, 1043478), (24, 869565), (29, 719640), (30, 695652), (36, 579710), (40, 521739), (45, 463768), (58, 359820), (60, 347826), (72, 289855), (87, 239880), (90, 231884), (116, 179910), (120, 173913), (145, 143928), (174, 119940), (180, 115942), (232, 89955), (261, 79960), (290, 71964), (348, 59970), (360, 57971), (435, 47976), (522, 39980), (580, 35982), (696, 29985), (870, 23988), (1044, 19990), (1160, 17991), (1305, 15992), (1740, 11994), (1999, 10440), (2088, 9995), (2610, 7996), (3480, 5997), (3998, 5220)]