20807660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3221}}^1$

素因数の和:3266

約数の個数: 48

約数和(自身を含む): 48716640

約数和(自身を除く): 27908980

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 3221, 3230, 6442, 6460, 12884, 16105, 32210, 54757, 61199, 64420, 109514, 122398, 219028, 244796, 273785, 305995, 547570, 611990, 1040383, 1095140, 1223980, 2080766, 4161532, 5201915, 10403830, 20807660]

約数ペア:

[(1, 20807660), (2, 10403830), (4, 5201915), (5, 4161532), (10, 2080766), (17, 1223980), (19, 1095140), (20, 1040383), (34, 611990), (38, 547570), (68, 305995), (76, 273785), (85, 244796), (95, 219028), (170, 122398), (190, 109514), (323, 64420), (340, 61199), (380, 54757), (646, 32210), (1292, 16105), (1615, 12884), (3221, 6460), (3230, 6442)]