1218524520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{20681}}^1$

素因数の和:21186

約数の個数: 64

約数和(自身を含む): 3663195840

約数和(自身を除く): 2444671320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 491, 982, 1473, 1964, 2455, 2946, 3928, 4910, 5892, 7365, 9820, 11784, 14730, 19640, 20681, 29460, 41362, 58920, 62043, 82724, 103405, 124086, 165448, 206810, 248172, 310215, 413620, 496344, 620430, 827240, 1240860, 2481720, 10154371, 20308742, 30463113, 40617484, 50771855, 60926226, 81234968, 101543710, 121852452, 152315565, 203087420, 243704904, 304631130, 406174840, 609262260, 1218524520]

約数ペア:

[(1, 1218524520), (2, 609262260), (3, 406174840), (4, 304631130), (5, 243704904), (6, 203087420), (8, 152315565), (10, 121852452), (12, 101543710), (15, 81234968), (20, 60926226), (24, 50771855), (30, 40617484), (40, 30463113), (60, 20308742), (120, 10154371), (491, 2481720), (982, 1240860), (1473, 827240), (1964, 620430), (2455, 496344), (2946, 413620), (3928, 310215), (4910, 248172), (5892, 206810), (7365, 165448), (9820, 124086), (11784, 103405), (14730, 82724), (19640, 62043), (20681, 58920), (29460, 41362)]