665380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:148

約数の個数: 48

約数和(自身を含む): 1572480

約数和(自身を除く): 907100

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 103, 170, 190, 206, 323, 340, 380, 412, 515, 646, 1030, 1292, 1615, 1751, 1957, 2060, 3230, 3502, 3914, 6460, 7004, 7828, 8755, 9785, 17510, 19570, 33269, 35020, 39140, 66538, 133076, 166345, 332690, 665380]

約数ペア:

[(1, 665380), (2, 332690), (4, 166345), (5, 133076), (10, 66538), (17, 39140), (19, 35020), (20, 33269), (34, 19570), (38, 17510), (68, 9785), (76, 8755), (85, 7828), (95, 7004), (103, 6460), (170, 3914), (190, 3502), (206, 3230), (323, 2060), (340, 1957), (380, 1751), (412, 1615), (515, 1292), (646, 1030)]