19966680

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1499}}^1$

素因数の和:1553

約数の個数: 96

約数和(自身を含む): 66690000

約数和(自身を除く): 46723320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 37, 40, 45, 60, 72, 74, 90, 111, 120, 148, 180, 185, 222, 296, 333, 360, 370, 444, 555, 666, 740, 888, 1110, 1332, 1480, 1499, 1665, 2220, 2664, 2998, 3330, 4440, 4497, 5996, 6660, 7495, 8994, 11992, 13320, 13491, 14990, 17988, 22485, 26982, 29980, 35976, 44970, 53964, 55463, 59960, 67455, 89940, 107928, 110926, 134910, 166389, 179880, 221852, 269820, 277315, 332778, 443704, 499167, 539640, 554630, 665556, 831945, 998334, 1109260, 1331112, 1663890, 1996668, 2218520, 2495835, 3327780, 3993336, 4991670, 6655560, 9983340, 19966680]

約数ペア:

[(1, 19966680), (2, 9983340), (3, 6655560), (4, 4991670), (5, 3993336), (6, 3327780), (8, 2495835), (9, 2218520), (10, 1996668), (12, 1663890), (15, 1331112), (18, 1109260), (20, 998334), (24, 831945), (30, 665556), (36, 554630), (37, 539640), (40, 499167), (45, 443704), (60, 332778), (72, 277315), (74, 269820), (90, 221852), (111, 179880), (120, 166389), (148, 134910), (180, 110926), (185, 107928), (222, 89940), (296, 67455), (333, 59960), (360, 55463), (370, 53964), (444, 44970), (555, 35976), (666, 29980), (740, 26982), (888, 22485), (1110, 17988), (1332, 14990), (1480, 13491), (1499, 13320), (1665, 11992), (2220, 8994), (2664, 7495), (2998, 6660), (3330, 5996), (4440, 4497)]