396982280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1\times {\mathrm{823}}^1$

素因数の和:1254

約数の個数: 64

約数和(自身を含む): 925516800

約数和(自身を除く): 528534520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 389, 620, 778, 823, 1240, 1556, 1646, 1945, 3112, 3292, 3890, 4115, 6584, 7780, 8230, 12059, 15560, 16460, 24118, 25513, 32920, 48236, 51026, 60295, 96472, 102052, 120590, 127565, 204104, 241180, 255130, 320147, 482360, 510260, 640294, 1020520, 1280588, 1600735, 2561176, 3201470, 6402940, 9924557, 12805880, 19849114, 39698228, 49622785, 79396456, 99245570, 198491140, 396982280]

約数ペア:

[(1, 396982280), (2, 198491140), (4, 99245570), (5, 79396456), (8, 49622785), (10, 39698228), (20, 19849114), (31, 12805880), (40, 9924557), (62, 6402940), (124, 3201470), (155, 2561176), (248, 1600735), (310, 1280588), (389, 1020520), (620, 640294), (778, 510260), (823, 482360), (1240, 320147), (1556, 255130), (1646, 241180), (1945, 204104), (3112, 127565), (3292, 120590), (3890, 102052), (4115, 96472), (6584, 60295), (7780, 51026), (8230, 48236), (12059, 32920), (15560, 25513), (16460, 24118)]