20877480

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1487}}^1$

素因数の和:1520

約数の個数: 128

約数和(自身を含む): 74995200

約数和(自身を除く): 54117720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 90, 104, 108, 117, 120, 130, 135, 156, 180, 195, 216, 234, 260, 270, 312, 351, 360, 390, 468, 520, 540, 585, 702, 780, 936, 1080, 1170, 1404, 1487, 1560, 1755, 2340, 2808, 2974, 3510, 4461, 4680, 5948, 7020, 7435, 8922, 11896, 13383, 14040, 14870, 17844, 19331, 22305, 26766, 29740, 35688, 38662, 40149, 44610, 53532, 57993, 59480, 66915, 77324, 80298, 89220, 96655, 107064, 115986, 133830, 154648, 160596, 173979, 178440, 193310, 200745, 231972, 267660, 289965, 321192, 347958, 386620, 401490, 463944, 521937, 535320, 579930, 695916, 773240, 802980, 869895, 1043874, 1159860, 1391832, 1605960, 1739790, 2087748, 2319720, 2609685, 3479580, 4175496, 5219370, 6959160, 10438740, 20877480]

約数ペア:

[(1, 20877480), (2, 10438740), (3, 6959160), (4, 5219370), (5, 4175496), (6, 3479580), (8, 2609685), (9, 2319720), (10, 2087748), (12, 1739790), (13, 1605960), (15, 1391832), (18, 1159860), (20, 1043874), (24, 869895), (26, 802980), (27, 773240), (30, 695916), (36, 579930), (39, 535320), (40, 521937), (45, 463944), (52, 401490), (54, 386620), (60, 347958), (65, 321192), (72, 289965), (78, 267660), (90, 231972), (104, 200745), (108, 193310), (117, 178440), (120, 173979), (130, 160596), (135, 154648), (156, 133830), (180, 115986), (195, 107064), (216, 96655), (234, 89220), (260, 80298), (270, 77324), (312, 66915), (351, 59480), (360, 57993), (390, 53532), (468, 44610), (520, 40149), (540, 38662), (585, 35688), (702, 29740), (780, 26766), (936, 22305), (1080, 19331), (1170, 17844), (1404, 14870), (1487, 14040), (1560, 13383), (1755, 11896), (2340, 8922), (2808, 7435), (2974, 7020), (3510, 5948), (4461, 4680)]