20788380

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{281}}^1$

素因数の和:436

約数の個数: 96

約数和(自身を含む): 65378880

約数和(自身を除く): 44590500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 137, 180, 270, 274, 281, 411, 540, 548, 562, 685, 822, 843, 1124, 1233, 1370, 1405, 1644, 1686, 2055, 2466, 2529, 2740, 2810, 3372, 3699, 4110, 4215, 4932, 5058, 5620, 6165, 7398, 7587, 8220, 8430, 10116, 12330, 12645, 14796, 15174, 16860, 18495, 24660, 25290, 30348, 36990, 37935, 38497, 50580, 73980, 75870, 76994, 115491, 151740, 153988, 192485, 230982, 346473, 384970, 461964, 577455, 692946, 769940, 1039419, 1154910, 1385892, 1732365, 2078838, 2309820, 3464730, 4157676, 5197095, 6929460, 10394190, 20788380]

約数ペア:

[(1, 20788380), (2, 10394190), (3, 6929460), (4, 5197095), (5, 4157676), (6, 3464730), (9, 2309820), (10, 2078838), (12, 1732365), (15, 1385892), (18, 1154910), (20, 1039419), (27, 769940), (30, 692946), (36, 577455), (45, 461964), (54, 384970), (60, 346473), (90, 230982), (108, 192485), (135, 153988), (137, 151740), (180, 115491), (270, 76994), (274, 75870), (281, 73980), (411, 50580), (540, 38497), (548, 37935), (562, 36990), (685, 30348), (822, 25290), (843, 24660), (1124, 18495), (1233, 16860), (1370, 15174), (1405, 14796), (1644, 12645), (1686, 12330), (2055, 10116), (2466, 8430), (2529, 8220), (2740, 7587), (2810, 7398), (3372, 6165), (3699, 5620), (4110, 5058), (4215, 4932)]