40579840

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{647}}^1$

素因数の和:682

約数の個数: 108

約数和(自身を含む): 113245776

約数和(自身を除く): 72665936

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 490, 560, 640, 647, 784, 896, 980, 1120, 1280, 1294, 1568, 1792, 1960, 2240, 2588, 3136, 3235, 3920, 4480, 4529, 5176, 6272, 6470, 7840, 8960, 9058, 10352, 12544, 12940, 15680, 18116, 20704, 22645, 25880, 31360, 31703, 36232, 41408, 45290, 51760, 62720, 63406, 72464, 82816, 90580, 103520, 126812, 144928, 158515, 165632, 181160, 207040, 253624, 289856, 317030, 362320, 414080, 507248, 579712, 634060, 724640, 828160, 1014496, 1159424, 1268120, 1449280, 2028992, 2536240, 2898560, 4057984, 5072480, 5797120, 8115968, 10144960, 20289920, 40579840]

約数ペア:

[(1, 40579840), (2, 20289920), (4, 10144960), (5, 8115968), (7, 5797120), (8, 5072480), (10, 4057984), (14, 2898560), (16, 2536240), (20, 2028992), (28, 1449280), (32, 1268120), (35, 1159424), (40, 1014496), (49, 828160), (56, 724640), (64, 634060), (70, 579712), (80, 507248), (98, 414080), (112, 362320), (128, 317030), (140, 289856), (160, 253624), (196, 207040), (224, 181160), (245, 165632), (256, 158515), (280, 144928), (320, 126812), (392, 103520), (448, 90580), (490, 82816), (560, 72464), (640, 63406), (647, 62720), (784, 51760), (896, 45290), (980, 41408), (1120, 36232), (1280, 31703), (1294, 31360), (1568, 25880), (1792, 22645), (1960, 20704), (2240, 18116), (2588, 15680), (3136, 12940), (3235, 12544), (3920, 10352), (4480, 9058), (4529, 8960), (5176, 7840), (6272, 6470)]