28909320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{181}}^1$

素因数の和:228

約数の個数: 128

約数和(自身を含む): 95921280

約数和(自身を除く): 67011960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 121, 132, 165, 181, 220, 242, 264, 330, 362, 363, 440, 484, 543, 605, 660, 724, 726, 905, 968, 1086, 1210, 1320, 1331, 1448, 1452, 1810, 1815, 1991, 2172, 2420, 2662, 2715, 2904, 3620, 3630, 3982, 3993, 4344, 4840, 5324, 5430, 5973, 6655, 7240, 7260, 7964, 7986, 9955, 10648, 10860, 11946, 13310, 14520, 15928, 15972, 19910, 19965, 21720, 21901, 23892, 26620, 29865, 31944, 39820, 39930, 43802, 47784, 53240, 59730, 65703, 79640, 79860, 87604, 109505, 119460, 131406, 159720, 175208, 219010, 238920, 240911, 262812, 328515, 438020, 481822, 525624, 657030, 722733, 876040, 963644, 1204555, 1314060, 1445466, 1927288, 2409110, 2628120, 2890932, 3613665, 4818220, 5781864, 7227330, 9636440, 14454660, 28909320]

約数ペア:

[(1, 28909320), (2, 14454660), (3, 9636440), (4, 7227330), (5, 5781864), (6, 4818220), (8, 3613665), (10, 2890932), (11, 2628120), (12, 2409110), (15, 1927288), (20, 1445466), (22, 1314060), (24, 1204555), (30, 963644), (33, 876040), (40, 722733), (44, 657030), (55, 525624), (60, 481822), (66, 438020), (88, 328515), (110, 262812), (120, 240911), (121, 238920), (132, 219010), (165, 175208), (181, 159720), (220, 131406), (242, 119460), (264, 109505), (330, 87604), (362, 79860), (363, 79640), (440, 65703), (484, 59730), (543, 53240), (605, 47784), (660, 43802), (724, 39930), (726, 39820), (905, 31944), (968, 29865), (1086, 26620), (1210, 23892), (1320, 21901), (1331, 21720), (1448, 19965), (1452, 19910), (1810, 15972), (1815, 15928), (1991, 14520), (2172, 13310), (2420, 11946), (2662, 10860), (2715, 10648), (2904, 9955), (3620, 7986), (3630, 7964), (3982, 7260), (3993, 7240), (4344, 6655), (4840, 5973), (5324, 5430)]