128871680

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{757}}^1$

素因数の和:804

約数の個数: 144

約数和(自身を含む): 371844480

約数和(自身を除く): 242972800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 112, 128, 133, 140, 152, 160, 190, 224, 256, 266, 280, 304, 320, 380, 448, 532, 560, 608, 640, 665, 757, 760, 896, 1064, 1120, 1216, 1280, 1330, 1514, 1520, 1792, 2128, 2240, 2432, 2660, 3028, 3040, 3785, 4256, 4480, 4864, 5299, 5320, 6056, 6080, 7570, 8512, 8960, 10598, 10640, 12112, 12160, 14383, 15140, 17024, 21196, 21280, 24224, 24320, 26495, 28766, 30280, 34048, 42392, 42560, 48448, 52990, 57532, 60560, 71915, 84784, 85120, 96896, 100681, 105980, 115064, 121120, 143830, 169568, 170240, 193792, 201362, 211960, 230128, 242240, 287660, 339136, 402724, 423920, 460256, 484480, 503405, 575320, 678272, 805448, 847840, 920512, 968960, 1006810, 1150640, 1356544, 1610896, 1695680, 1841024, 2013620, 2301280, 3221792, 3391360, 3682048, 4027240, 4602560, 6443584, 6782720, 8054480, 9205120, 12887168, 16108960, 18410240, 25774336, 32217920, 64435840, 128871680]

約数ペア:

[(1, 128871680), (2, 64435840), (4, 32217920), (5, 25774336), (7, 18410240), (8, 16108960), (10, 12887168), (14, 9205120), (16, 8054480), (19, 6782720), (20, 6443584), (28, 4602560), (32, 4027240), (35, 3682048), (38, 3391360), (40, 3221792), (56, 2301280), (64, 2013620), (70, 1841024), (76, 1695680), (80, 1610896), (95, 1356544), (112, 1150640), (128, 1006810), (133, 968960), (140, 920512), (152, 847840), (160, 805448), (190, 678272), (224, 575320), (256, 503405), (266, 484480), (280, 460256), (304, 423920), (320, 402724), (380, 339136), (448, 287660), (532, 242240), (560, 230128), (608, 211960), (640, 201362), (665, 193792), (757, 170240), (760, 169568), (896, 143830), (1064, 121120), (1120, 115064), (1216, 105980), (1280, 100681), (1330, 96896), (1514, 85120), (1520, 84784), (1792, 71915), (2128, 60560), (2240, 57532), (2432, 52990), (2660, 48448), (3028, 42560), (3040, 42392), (3785, 34048), (4256, 30280), (4480, 28766), (4864, 26495), (5299, 24320), (5320, 24224), (6056, 21280), (6080, 21196), (7570, 17024), (8512, 15140), (8960, 14383), (10598, 12160), (10640, 12112)]