72209920

素因数分解:

$2^9\times 5^1\times {\mathrm{67}}^1\times {\mathrm{421}}^1$

素因数の和:511

約数の個数: 80

約数和(自身を含む): 176136048

約数和(自身を除く): 103926128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 128, 134, 160, 256, 268, 320, 335, 421, 512, 536, 640, 670, 842, 1072, 1280, 1340, 1684, 2105, 2144, 2560, 2680, 3368, 4210, 4288, 5360, 6736, 8420, 8576, 10720, 13472, 16840, 17152, 21440, 26944, 28207, 33680, 34304, 42880, 53888, 56414, 67360, 85760, 107776, 112828, 134720, 141035, 171520, 215552, 225656, 269440, 282070, 451312, 538880, 564140, 902624, 1077760, 1128280, 1805248, 2256560, 3610496, 4513120, 7220992, 9026240, 14441984, 18052480, 36104960, 72209920]

約数ペア:

[(1, 72209920), (2, 36104960), (4, 18052480), (5, 14441984), (8, 9026240), (10, 7220992), (16, 4513120), (20, 3610496), (32, 2256560), (40, 1805248), (64, 1128280), (67, 1077760), (80, 902624), (128, 564140), (134, 538880), (160, 451312), (256, 282070), (268, 269440), (320, 225656), (335, 215552), (421, 171520), (512, 141035), (536, 134720), (640, 112828), (670, 107776), (842, 85760), (1072, 67360), (1280, 56414), (1340, 53888), (1684, 42880), (2105, 34304), (2144, 33680), (2560, 28207), (2680, 26944), (3368, 21440), (4210, 17152), (4288, 16840), (5360, 13472), (6736, 10720), (8420, 8576)]