20815380

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{4283}}^1$

素因数の和:4307

約数の個数: 72

約数和(自身を含む): 65493792

約数和(自身を除く): 44678412

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4283, 4860, 8566, 12849, 17132, 21415, 25698, 38547, 42830, 51396, 64245, 77094, 85660, 115641, 128490, 154188, 192735, 231282, 256980, 346923, 385470, 462564, 578205, 693846, 770940, 1040769, 1156410, 1387692, 1734615, 2081538, 2312820, 3469230, 4163076, 5203845, 6938460, 10407690, 20815380]

約数ペア:

[(1, 20815380), (2, 10407690), (3, 6938460), (4, 5203845), (5, 4163076), (6, 3469230), (9, 2312820), (10, 2081538), (12, 1734615), (15, 1387692), (18, 1156410), (20, 1040769), (27, 770940), (30, 693846), (36, 578205), (45, 462564), (54, 385470), (60, 346923), (81, 256980), (90, 231282), (108, 192735), (135, 154188), (162, 128490), (180, 115641), (243, 85660), (270, 77094), (324, 64245), (405, 51396), (486, 42830), (540, 38547), (810, 25698), (972, 21415), (1215, 17132), (1620, 12849), (2430, 8566), (4283, 4860)]