20538090

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:149

約数の個数: 128

約数和(自身を含む): 58924800

約数和(自身を除く): 38386710

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 29, 30, 43, 45, 54, 58, 61, 86, 87, 90, 122, 129, 135, 145, 174, 183, 215, 258, 261, 270, 290, 305, 366, 387, 430, 435, 522, 549, 610, 645, 774, 783, 870, 915, 1098, 1161, 1247, 1290, 1305, 1566, 1647, 1769, 1830, 1935, 2322, 2494, 2610, 2623, 2745, 3294, 3538, 3741, 3870, 3915, 5246, 5307, 5490, 5805, 6235, 7482, 7830, 7869, 8235, 8845, 10614, 11223, 11610, 12470, 13115, 15738, 15921, 16470, 17690, 18705, 22446, 23607, 26230, 26535, 31842, 33669, 37410, 39345, 47214, 47763, 53070, 56115, 67338, 70821, 76067, 78690, 79605, 95526, 112230, 118035, 141642, 152134, 159210, 168345, 228201, 236070, 238815, 336690, 354105, 380335, 456402, 477630, 684603, 708210, 760670, 1141005, 1369206, 2053809, 2282010, 3423015, 4107618, 6846030, 10269045, 20538090]

約数ペア:

[(1, 20538090), (2, 10269045), (3, 6846030), (5, 4107618), (6, 3423015), (9, 2282010), (10, 2053809), (15, 1369206), (18, 1141005), (27, 760670), (29, 708210), (30, 684603), (43, 477630), (45, 456402), (54, 380335), (58, 354105), (61, 336690), (86, 238815), (87, 236070), (90, 228201), (122, 168345), (129, 159210), (135, 152134), (145, 141642), (174, 118035), (183, 112230), (215, 95526), (258, 79605), (261, 78690), (270, 76067), (290, 70821), (305, 67338), (366, 56115), (387, 53070), (430, 47763), (435, 47214), (522, 39345), (549, 37410), (610, 33669), (645, 31842), (774, 26535), (783, 26230), (870, 23607), (915, 22446), (1098, 18705), (1161, 17690), (1247, 16470), (1290, 15921), (1305, 15738), (1566, 13115), (1647, 12470), (1769, 11610), (1830, 11223), (1935, 10614), (2322, 8845), (2494, 8235), (2610, 7869), (2623, 7830), (2745, 7482), (3294, 6235), (3538, 5805), (3741, 5490), (3870, 5307), (3915, 5246)]