64219280

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{5113}}^1$

素因数の和:5283

約数の個数: 40

約数和(自身を含む): 150290232

約数和(自身を除く): 86070952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 628, 785, 1256, 1570, 2512, 3140, 5113, 6280, 10226, 12560, 20452, 25565, 40904, 51130, 81808, 102260, 204520, 409040, 802741, 1605482, 3210964, 4013705, 6421928, 8027410, 12843856, 16054820, 32109640, 64219280]

約数ペア:

[(1, 64219280), (2, 32109640), (4, 16054820), (5, 12843856), (8, 8027410), (10, 6421928), (16, 4013705), (20, 3210964), (40, 1605482), (80, 802741), (157, 409040), (314, 204520), (628, 102260), (785, 81808), (1256, 51130), (1570, 40904), (2512, 25565), (3140, 20452), (5113, 12560), (6280, 10226)]