100209920

素因数分解:

$2^8\times 5^1\times {\mathrm{79}}^1\times {\mathrm{991}}^1$

素因数の和:1091

約数の個数: 72

約数和(自身を含む): 243317760

約数和(自身を除く): 143107840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 395, 632, 640, 790, 991, 1264, 1280, 1580, 1982, 2528, 3160, 3964, 4955, 5056, 6320, 7928, 9910, 10112, 12640, 15856, 19820, 20224, 25280, 31712, 39640, 50560, 63424, 78289, 79280, 101120, 126848, 156578, 158560, 253696, 313156, 317120, 391445, 626312, 634240, 782890, 1252624, 1268480, 1565780, 2505248, 3131560, 5010496, 6263120, 10020992, 12526240, 20041984, 25052480, 50104960, 100209920]

約数ペア:

[(1, 100209920), (2, 50104960), (4, 25052480), (5, 20041984), (8, 12526240), (10, 10020992), (16, 6263120), (20, 5010496), (32, 3131560), (40, 2505248), (64, 1565780), (79, 1268480), (80, 1252624), (128, 782890), (158, 634240), (160, 626312), (256, 391445), (316, 317120), (320, 313156), (395, 253696), (632, 158560), (640, 156578), (790, 126848), (991, 101120), (1264, 79280), (1280, 78289), (1580, 63424), (1982, 50560), (2528, 39640), (3160, 31712), (3964, 25280), (4955, 20224), (5056, 19820), (6320, 15856), (7928, 12640), (9910, 10112)]