8398520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:576

約数の個数: 64

約数和(自身を含む): 21047040

約数和(自身を除く): 12648520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 521, 620, 806, 1042, 1240, 1612, 2015, 2084, 2605, 3224, 4030, 4168, 5210, 6773, 8060, 10420, 13546, 16120, 16151, 20840, 27092, 32302, 33865, 54184, 64604, 67730, 80755, 129208, 135460, 161510, 209963, 270920, 323020, 419926, 646040, 839852, 1049815, 1679704, 2099630, 4199260, 8398520]

約数ペア:

[(1, 8398520), (2, 4199260), (4, 2099630), (5, 1679704), (8, 1049815), (10, 839852), (13, 646040), (20, 419926), (26, 323020), (31, 270920), (40, 209963), (52, 161510), (62, 135460), (65, 129208), (104, 80755), (124, 67730), (130, 64604), (155, 54184), (248, 33865), (260, 32302), (310, 27092), (403, 20840), (520, 16151), (521, 16120), (620, 13546), (806, 10420), (1042, 8060), (1240, 6773), (1612, 5210), (2015, 4168), (2084, 4030), (2605, 3224)]