20723400

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{397}}^1$

素因数の和:448

約数の個数: 144

約数和(自身を含む): 72177300

約数和(自身を除く): 51453900

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 29, 30, 36, 40, 45, 50, 58, 60, 72, 75, 87, 90, 100, 116, 120, 145, 150, 174, 180, 200, 225, 232, 261, 290, 300, 348, 360, 397, 435, 450, 522, 580, 600, 696, 725, 794, 870, 900, 1044, 1160, 1191, 1305, 1450, 1588, 1740, 1800, 1985, 2088, 2175, 2382, 2610, 2900, 3176, 3480, 3573, 3970, 4350, 4764, 5220, 5800, 5955, 6525, 7146, 7940, 8700, 9528, 9925, 10440, 11513, 11910, 13050, 14292, 15880, 17400, 17865, 19850, 23026, 23820, 26100, 28584, 29775, 34539, 35730, 39700, 46052, 47640, 52200, 57565, 59550, 69078, 71460, 79400, 89325, 92104, 103617, 115130, 119100, 138156, 142920, 172695, 178650, 207234, 230260, 238200, 276312, 287825, 345390, 357300, 414468, 460520, 518085, 575650, 690780, 714600, 828936, 863475, 1036170, 1151300, 1381560, 1726950, 2072340, 2302600, 2590425, 3453900, 4144680, 5180850, 6907800, 10361700, 20723400]

約数ペア:

[(1, 20723400), (2, 10361700), (3, 6907800), (4, 5180850), (5, 4144680), (6, 3453900), (8, 2590425), (9, 2302600), (10, 2072340), (12, 1726950), (15, 1381560), (18, 1151300), (20, 1036170), (24, 863475), (25, 828936), (29, 714600), (30, 690780), (36, 575650), (40, 518085), (45, 460520), (50, 414468), (58, 357300), (60, 345390), (72, 287825), (75, 276312), (87, 238200), (90, 230260), (100, 207234), (116, 178650), (120, 172695), (145, 142920), (150, 138156), (174, 119100), (180, 115130), (200, 103617), (225, 92104), (232, 89325), (261, 79400), (290, 71460), (300, 69078), (348, 59550), (360, 57565), (397, 52200), (435, 47640), (450, 46052), (522, 39700), (580, 35730), (600, 34539), (696, 29775), (725, 28584), (794, 26100), (870, 23820), (900, 23026), (1044, 19850), (1160, 17865), (1191, 17400), (1305, 15880), (1450, 14292), (1588, 13050), (1740, 11910), (1800, 11513), (1985, 10440), (2088, 9925), (2175, 9528), (2382, 8700), (2610, 7940), (2900, 7146), (3176, 6525), (3480, 5955), (3573, 5800), (3970, 5220), (4350, 4764)]