20399760

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{977}}^1$

素因数の和:1025

約数の個数: 120

約数和(自身を含む): 70944120

約数和(自身を除く): 50544360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 36, 40, 45, 48, 58, 60, 72, 80, 87, 90, 116, 120, 144, 145, 174, 180, 232, 240, 261, 290, 348, 360, 435, 464, 522, 580, 696, 720, 870, 977, 1044, 1160, 1305, 1392, 1740, 1954, 2088, 2320, 2610, 2931, 3480, 3908, 4176, 4885, 5220, 5862, 6960, 7816, 8793, 9770, 10440, 11724, 14655, 15632, 17586, 19540, 20880, 23448, 28333, 29310, 35172, 39080, 43965, 46896, 56666, 58620, 70344, 78160, 84999, 87930, 113332, 117240, 140688, 141665, 169998, 175860, 226664, 234480, 254997, 283330, 339996, 351720, 424995, 453328, 509994, 566660, 679992, 703440, 849990, 1019988, 1133320, 1274985, 1359984, 1699980, 2039976, 2266640, 2549970, 3399960, 4079952, 5099940, 6799920, 10199880, 20399760]

約数ペア:

[(1, 20399760), (2, 10199880), (3, 6799920), (4, 5099940), (5, 4079952), (6, 3399960), (8, 2549970), (9, 2266640), (10, 2039976), (12, 1699980), (15, 1359984), (16, 1274985), (18, 1133320), (20, 1019988), (24, 849990), (29, 703440), (30, 679992), (36, 566660), (40, 509994), (45, 453328), (48, 424995), (58, 351720), (60, 339996), (72, 283330), (80, 254997), (87, 234480), (90, 226664), (116, 175860), (120, 169998), (144, 141665), (145, 140688), (174, 117240), (180, 113332), (232, 87930), (240, 84999), (261, 78160), (290, 70344), (348, 58620), (360, 56666), (435, 46896), (464, 43965), (522, 39080), (580, 35172), (696, 29310), (720, 28333), (870, 23448), (977, 20880), (1044, 19540), (1160, 17586), (1305, 15632), (1392, 14655), (1740, 11724), (1954, 10440), (2088, 9770), (2320, 8793), (2610, 7816), (2931, 6960), (3480, 5862), (3908, 5220), (4176, 4885)]