1390305920

素因数分解:

$2^7\times 5^1\times {\mathrm{331}}^1\times {\mathrm{6563}}^1$

素因数の和:6913

約数の個数: 64

約数和(自身を含む): 3334249440

約数和(自身を除く): 1943943520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 331, 640, 662, 1324, 1655, 2648, 3310, 5296, 6563, 6620, 10592, 13126, 13240, 21184, 26252, 26480, 32815, 42368, 52504, 52960, 65630, 105008, 105920, 131260, 210016, 211840, 262520, 420032, 525040, 840064, 1050080, 2100160, 2172353, 4200320, 4344706, 8689412, 10861765, 17378824, 21723530, 34757648, 43447060, 69515296, 86894120, 139030592, 173788240, 278061184, 347576480, 695152960, 1390305920]

約数ペア:

[(1, 1390305920), (2, 695152960), (4, 347576480), (5, 278061184), (8, 173788240), (10, 139030592), (16, 86894120), (20, 69515296), (32, 43447060), (40, 34757648), (64, 21723530), (80, 17378824), (128, 10861765), (160, 8689412), (320, 4344706), (331, 4200320), (640, 2172353), (662, 2100160), (1324, 1050080), (1655, 840064), (2648, 525040), (3310, 420032), (5296, 262520), (6563, 211840), (6620, 210016), (10592, 131260), (13126, 105920), (13240, 105008), (21184, 65630), (26252, 52960), (26480, 52504), (32815, 42368)]