2989980

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{113}}^1$

素因数の和:145

約数の個数: 144

約数和(自身を含む): 10916640

約数和(自身を除く): 7926660

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 84, 90, 98, 105, 108, 113, 126, 135, 140, 147, 180, 189, 196, 210, 226, 245, 252, 270, 294, 315, 339, 378, 420, 441, 452, 490, 540, 565, 588, 630, 678, 735, 756, 791, 882, 945, 980, 1017, 1130, 1260, 1323, 1356, 1470, 1582, 1695, 1764, 1890, 2034, 2205, 2260, 2373, 2646, 2940, 3051, 3164, 3390, 3780, 3955, 4068, 4410, 4746, 5085, 5292, 5537, 6102, 6615, 6780, 7119, 7910, 8820, 9492, 10170, 11074, 11865, 12204, 13230, 14238, 15255, 15820, 16611, 20340, 21357, 22148, 23730, 26460, 27685, 28476, 30510, 33222, 35595, 42714, 47460, 49833, 55370, 61020, 66444, 71190, 83055, 85428, 99666, 106785, 110740, 142380, 149499, 166110, 199332, 213570, 249165, 298998, 332220, 427140, 498330, 597996, 747495, 996660, 1494990, 2989980]

約数ペア:

[(1, 2989980), (2, 1494990), (3, 996660), (4, 747495), (5, 597996), (6, 498330), (7, 427140), (9, 332220), (10, 298998), (12, 249165), (14, 213570), (15, 199332), (18, 166110), (20, 149499), (21, 142380), (27, 110740), (28, 106785), (30, 99666), (35, 85428), (36, 83055), (42, 71190), (45, 66444), (49, 61020), (54, 55370), (60, 49833), (63, 47460), (70, 42714), (84, 35595), (90, 33222), (98, 30510), (105, 28476), (108, 27685), (113, 26460), (126, 23730), (135, 22148), (140, 21357), (147, 20340), (180, 16611), (189, 15820), (196, 15255), (210, 14238), (226, 13230), (245, 12204), (252, 11865), (270, 11074), (294, 10170), (315, 9492), (339, 8820), (378, 7910), (420, 7119), (441, 6780), (452, 6615), (490, 6102), (540, 5537), (565, 5292), (588, 5085), (630, 4746), (678, 4410), (735, 4068), (756, 3955), (791, 3780), (882, 3390), (945, 3164), (980, 3051), (1017, 2940), (1130, 2646), (1260, 2373), (1323, 2260), (1356, 2205), (1470, 2034), (1582, 1890), (1695, 1764)]