28905660

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{2549}}^1$

素因数の和:2577

約数の個数: 120

約数和(自身を含む): 103672800

約数和(自身を除く): 74767140

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1890, 2268, 2549, 2835, 3780, 5098, 5670, 7647, 10196, 11340, 12745, 15294, 17843, 22941, 25490, 30588, 35686, 38235, 45882, 50980, 53529, 68823, 71372, 76470, 89215, 91764, 107058, 114705, 137646, 152940, 160587, 178430, 206469, 214116, 229410, 267645, 275292, 321174, 344115, 356860, 412938, 458820, 481761, 535290, 642348, 688230, 802935, 825876, 963522, 1032345, 1070580, 1376460, 1445283, 1605870, 1927044, 2064690, 2408805, 2890566, 3211740, 4129380, 4817610, 5781132, 7226415, 9635220, 14452830, 28905660]

約数ペア:

[(1, 28905660), (2, 14452830), (3, 9635220), (4, 7226415), (5, 5781132), (6, 4817610), (7, 4129380), (9, 3211740), (10, 2890566), (12, 2408805), (14, 2064690), (15, 1927044), (18, 1605870), (20, 1445283), (21, 1376460), (27, 1070580), (28, 1032345), (30, 963522), (35, 825876), (36, 802935), (42, 688230), (45, 642348), (54, 535290), (60, 481761), (63, 458820), (70, 412938), (81, 356860), (84, 344115), (90, 321174), (105, 275292), (108, 267645), (126, 229410), (135, 214116), (140, 206469), (162, 178430), (180, 160587), (189, 152940), (210, 137646), (252, 114705), (270, 107058), (315, 91764), (324, 89215), (378, 76470), (405, 71372), (420, 68823), (540, 53529), (567, 50980), (630, 45882), (756, 38235), (810, 35686), (945, 30588), (1134, 25490), (1260, 22941), (1620, 17843), (1890, 15294), (2268, 12745), (2549, 11340), (2835, 10196), (3780, 7647), (5098, 5670)]