20579580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16333}}^1$

素因数の和:16355

約数の個数: 72

約数和(自身を含む): 71346912

約数和(自身を除く): 50767332

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16333, 32666, 48999, 65332, 81665, 97998, 114331, 146997, 163330, 195996, 228662, 244995, 293994, 326660, 342993, 457324, 489990, 571655, 587988, 685986, 734985, 979980, 1028979, 1143310, 1371972, 1469970, 1714965, 2057958, 2286620, 2939940, 3429930, 4115916, 5144895, 6859860, 10289790, 20579580]

約数ペア:

[(1, 20579580), (2, 10289790), (3, 6859860), (4, 5144895), (5, 4115916), (6, 3429930), (7, 2939940), (9, 2286620), (10, 2057958), (12, 1714965), (14, 1469970), (15, 1371972), (18, 1143310), (20, 1028979), (21, 979980), (28, 734985), (30, 685986), (35, 587988), (36, 571655), (42, 489990), (45, 457324), (60, 342993), (63, 326660), (70, 293994), (84, 244995), (90, 228662), (105, 195996), (126, 163330), (140, 146997), (180, 114331), (210, 97998), (252, 81665), (315, 65332), (420, 48999), (630, 32666), (1260, 16333)]