15131720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{12203}}^1$

素因数の和:12245

約数の個数: 32

約数和(自身を含む): 35147520

約数和(自身を除く): 20015800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 12203, 24406, 48812, 61015, 97624, 122030, 244060, 378293, 488120, 756586, 1513172, 1891465, 3026344, 3782930, 7565860, 15131720]

約数ペア:

[(1, 15131720), (2, 7565860), (4, 3782930), (5, 3026344), (8, 1891465), (10, 1513172), (20, 756586), (31, 488120), (40, 378293), (62, 244060), (124, 122030), (155, 97624), (248, 61015), (310, 48812), (620, 24406), (1240, 12203)]