396422020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{89}}^1\times {\mathrm{421}}^1$

素因数の和:565

約数の個数: 72

約数和(自身を含む): 882123480

約数和(自身を除く): 485701460

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 89, 92, 115, 178, 230, 356, 421, 445, 460, 529, 842, 890, 1058, 1684, 1780, 2047, 2105, 2116, 2645, 4094, 4210, 5290, 8188, 8420, 9683, 10235, 10580, 19366, 20470, 37469, 38732, 40940, 47081, 48415, 74938, 94162, 96830, 149876, 187345, 188324, 193660, 222709, 235405, 374690, 445418, 470810, 749380, 861787, 890836, 941620, 1113545, 1723574, 2227090, 3447148, 4308935, 4454180, 8617870, 17235740, 19821101, 39642202, 79284404, 99105505, 198211010, 396422020]

約数ペア:

[(1, 396422020), (2, 198211010), (4, 99105505), (5, 79284404), (10, 39642202), (20, 19821101), (23, 17235740), (46, 8617870), (89, 4454180), (92, 4308935), (115, 3447148), (178, 2227090), (230, 1723574), (356, 1113545), (421, 941620), (445, 890836), (460, 861787), (529, 749380), (842, 470810), (890, 445418), (1058, 374690), (1684, 235405), (1780, 222709), (2047, 193660), (2105, 188324), (2116, 187345), (2645, 149876), (4094, 96830), (4210, 94162), (5290, 74938), (8188, 48415), (8420, 47081), (9683, 40940), (10235, 38732), (10580, 37469), (19366, 20470)]