28943280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{659}}^1$

素因数の和:739

約数の個数: 120

約数和(自身を含む): 98944560

約数和(自身を除く): 70001280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 61, 72, 80, 90, 120, 122, 144, 180, 183, 240, 244, 305, 360, 366, 488, 549, 610, 659, 720, 732, 915, 976, 1098, 1220, 1318, 1464, 1830, 1977, 2196, 2440, 2636, 2745, 2928, 3295, 3660, 3954, 4392, 4880, 5272, 5490, 5931, 6590, 7320, 7908, 8784, 9885, 10544, 10980, 11862, 13180, 14640, 15816, 19770, 21960, 23724, 26360, 29655, 31632, 39540, 40199, 43920, 47448, 52720, 59310, 79080, 80398, 94896, 118620, 120597, 158160, 160796, 200995, 237240, 241194, 321592, 361791, 401990, 474480, 482388, 602985, 643184, 723582, 803980, 964776, 1205970, 1447164, 1607960, 1808955, 1929552, 2411940, 2894328, 3215920, 3617910, 4823880, 5788656, 7235820, 9647760, 14471640, 28943280]

約数ペア:

[(1, 28943280), (2, 14471640), (3, 9647760), (4, 7235820), (5, 5788656), (6, 4823880), (8, 3617910), (9, 3215920), (10, 2894328), (12, 2411940), (15, 1929552), (16, 1808955), (18, 1607960), (20, 1447164), (24, 1205970), (30, 964776), (36, 803980), (40, 723582), (45, 643184), (48, 602985), (60, 482388), (61, 474480), (72, 401990), (80, 361791), (90, 321592), (120, 241194), (122, 237240), (144, 200995), (180, 160796), (183, 158160), (240, 120597), (244, 118620), (305, 94896), (360, 80398), (366, 79080), (488, 59310), (549, 52720), (610, 47448), (659, 43920), (720, 40199), (732, 39540), (915, 31632), (976, 29655), (1098, 26360), (1220, 23724), (1318, 21960), (1464, 19770), (1830, 15816), (1977, 14640), (2196, 13180), (2440, 11862), (2636, 10980), (2745, 10544), (2928, 9885), (3295, 8784), (3660, 7908), (3954, 7320), (4392, 6590), (4880, 5931), (5272, 5490)]