81999720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20707}}^1$

素因数の和:20735

約数の個数: 96

約数和(自身を含む): 290740320

約数和(自身を除く): 208740600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 132, 165, 180, 198, 220, 264, 330, 360, 396, 440, 495, 660, 792, 990, 1320, 1980, 3960, 20707, 41414, 62121, 82828, 103535, 124242, 165656, 186363, 207070, 227777, 248484, 310605, 372726, 414140, 455554, 496968, 621210, 683331, 745452, 828280, 911108, 931815, 1138885, 1242420, 1366662, 1490904, 1822216, 1863630, 2049993, 2277770, 2484840, 2733324, 3416655, 3727260, 4099986, 4555540, 5466648, 6833310, 7454520, 8199972, 9111080, 10249965, 13666620, 16399944, 20499930, 27333240, 40999860, 81999720]

約数ペア:

[(1, 81999720), (2, 40999860), (3, 27333240), (4, 20499930), (5, 16399944), (6, 13666620), (8, 10249965), (9, 9111080), (10, 8199972), (11, 7454520), (12, 6833310), (15, 5466648), (18, 4555540), (20, 4099986), (22, 3727260), (24, 3416655), (30, 2733324), (33, 2484840), (36, 2277770), (40, 2049993), (44, 1863630), (45, 1822216), (55, 1490904), (60, 1366662), (66, 1242420), (72, 1138885), (88, 931815), (90, 911108), (99, 828280), (110, 745452), (120, 683331), (132, 621210), (165, 496968), (180, 455554), (198, 414140), (220, 372726), (264, 310605), (330, 248484), (360, 227777), (396, 207070), (440, 186363), (495, 165656), (660, 124242), (792, 103535), (990, 82828), (1320, 62121), (1980, 41414), (3960, 20707)]