20399580

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1021}}^1$

素因数の和:1076

約数の個数: 96

約数和(自身を含む): 65244480

約数和(自身を除く): 44844900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 37, 45, 54, 60, 74, 90, 108, 111, 135, 148, 180, 185, 222, 270, 333, 370, 444, 540, 555, 666, 740, 999, 1021, 1110, 1332, 1665, 1998, 2042, 2220, 3063, 3330, 3996, 4084, 4995, 5105, 6126, 6660, 9189, 9990, 10210, 12252, 15315, 18378, 19980, 20420, 27567, 30630, 36756, 37777, 45945, 55134, 61260, 75554, 91890, 110268, 113331, 137835, 151108, 183780, 188885, 226662, 275670, 339993, 377770, 453324, 551340, 566655, 679986, 755540, 1019979, 1133310, 1359972, 1699965, 2039958, 2266620, 3399930, 4079916, 5099895, 6799860, 10199790, 20399580]

約数ペア:

[(1, 20399580), (2, 10199790), (3, 6799860), (4, 5099895), (5, 4079916), (6, 3399930), (9, 2266620), (10, 2039958), (12, 1699965), (15, 1359972), (18, 1133310), (20, 1019979), (27, 755540), (30, 679986), (36, 566655), (37, 551340), (45, 453324), (54, 377770), (60, 339993), (74, 275670), (90, 226662), (108, 188885), (111, 183780), (135, 151108), (148, 137835), (180, 113331), (185, 110268), (222, 91890), (270, 75554), (333, 61260), (370, 55134), (444, 45945), (540, 37777), (555, 36756), (666, 30630), (740, 27567), (999, 20420), (1021, 19980), (1110, 18378), (1332, 15315), (1665, 12252), (1998, 10210), (2042, 9990), (2220, 9189), (3063, 6660), (3330, 6126), (3996, 5105), (4084, 4995)]